Tailwind CSS v4 default palette
Tailwind indigo-50: #EEF2FF
In Tailwind CSS v4, indigo-50 is defined as --color-indigo-50: oklch(96.2% 0.018 272.314), which is #EEF2FF in hex and rgb(238, 242, 255): an off-white with a blue tint. In Tailwind v3, indigo-50 was #EEF2FF.
In OKLCH, indigo-50 has a lightness of 96.2%, chroma 0.018 and hue 272.3°.
This OKLCH value lies outside sRGB. The hex #EEF2FF is the sRGB fallback from the CSS Color 4 gamut mapping algorithm; on Display P3 screens browsers show a more saturated color, close to color(display-p3 0.9362 0.9486 0.9956).
In v3, indigo-50 was #EEF2FF. The v4 value is ΔE OK 0.0 away, below the point where most people can tell them apart.
Tailwind indigo is a blue-violet and the accent color in many Tailwind UI examples and early Tailwind templates.
Color codes for indigo-50
| Tailwind v4 token | --color-indigo-50 |
|---|---|
| OKLCH (source value) | oklch(96.2% 0.018 272.314) |
| HEX | #EEF2FF |
| RGB | rgb(238, 242, 255) |
| HSL | hsl(226, 100%, 97%) |
| HWB | hwb(226 93% 0%) |
| CMYK (naive, no ICC profile) | cmyk(7%, 5%, 0%, 0%) |
| Decimal | 15,659,775 |
| Display P3 | color(display-p3 0.9362 0.9486 0.9956) |
| Tailwind v3 hex | #EEF2FF |
| Utility classes | bg-indigo-50, text-indigo-50, border-indigo-50 |
Tailwind indigo scale
Contrast and accessibility
On indigo-50, black text has a contrast ratio of 18.78:1 and passes AAA at any text size; white text reaches 1.11:1.
WCAG 2.2 contrast ratios (success criteria 1.4.3 and 1.4.6: AA needs 4.5:1 for normal text and 3:1 for large text, AAA needs 7:1 and 4.5:1). APCA Lc is the lightness contrast from the APCA-W3 0.0.98G model proposed for WCAG 3; a higher absolute value is more readable, and Lc 75 is its suggested minimum for body text.
| Pair | Ratio | AA | AA large | AAA | AAA large | APCA Lc |
|---|---|---|---|---|---|---|
| Black text on indigo-50 | 18.78:1 | Pass | Pass | Pass | Pass | 98.4 |
| White text on indigo-50 | 1.11:1 | Fail | Fail | Fail | Fail | 0.0 |
| Indigo-50 text on white | 1.11:1 | Fail | Fail | Fail | Fail | 0.0 |
| Indigo-50 text on black | 18.78:1 | Pass | Pass | Pass | Pass | −99.4 |
Tints and shades
Each step mixes var(--color-indigo-50) with white (tints) or black (shades) in gamma-encoded sRGB, the same result as color-mix(in srgb, var(--color-indigo-50), white 25%) in CSS.
Tints (mixed with white)
- 5%
#eff3ff - 15%
#f1f4ff - 25%
#f2f5ff - 35%
#f4f7ff - 45%
#f6f8ff - 55%
#f7f9ff - 65%
#f9faff - 75%
#fbfcff - 85%
#fcfdff - 95%
#fefeff
Shades (mixed with black)
- 5%
#e2e6f2 - 15%
#caced9 - 25%
#b3b6bf - 35%
#9b9da6 - 45%
#83858c - 55%
#6b6d73 - 65%
#535559 - 75%
#3c3d40 - 85%
#242426 - 95%
#0c0c0d
Color harmonies
Rotating the hue in OKLCH while keeping lightness and chroma, indigo-50's complementary color is #F7F2E5 (close to linen), its analogous colors are #E8F4FE and #F5F0FD, and its triadic partners are #FEEEEB and #EAF6ED. For text on top, black gives the higher contrast.
| Harmony | Rotation | Color |
|---|---|---|
| Complementary | +180° | #f7f2e5 |
| Analogous | −30°, +30° | #e8f4fe#f5f0fd |
| Triadic | +120°, +240° | #feeeeb#eaf6ed |
| Split-complementary | +150°, +210° | #fcf0e6#f0f5e7 |
Computed in OKLCH: the hue is rotated by 180° (complementary), ±30° (analogous), ±120° (triadic) and 180° ±30° (split-complementary) while lightness and chroma stay fixed. Results that fall outside sRGB are brought back with the CSS Color 4 gamut mapping algorithm. Because this uses OKLCH, the values differ from tools that rotate hue in HSL, but every color keeps the same perceived lightness.
Warm or cool?
Tailwind indigo-50 is close to neutral: its OKLCH chroma is only 0.018, so its temperature comes from context. The faint 226° hue gives it a slightly cool cast.
Nearest named and Tailwind colors
Distance is ΔE OK, the Euclidean distance in OKLab multiplied by 100. Values under about 2 are hard to tell apart side by side.
Nearest CSS named colors
| Color | HEX | ΔE OK |
|---|---|---|
| aliceblue | #f0f8ff | 1.6 |
| whitesmoke | #f5f5f5 | 2.0 |
| ghostwhite | #f8f8ff | 2.1 |
Code snippets
<div class="bg-indigo-50 text-black">...</div>
<p class="text-indigo-50 border-indigo-50">...</p>.element {
color: var(--color-indigo-50);
background-color: oklch(96.2% 0.018 272.314);
border-color: #eef2ff;
outline-color: rgb(238 242 255);
}import SwiftUI
extension Color {
static let indigo50 = Color(red: 0.933, green: 0.949, blue: 1.000)
}import androidx.compose.ui.graphics.Color
val Indigo50 = Color(0xFFEEF2FF)import 'package:flutter/material.dart';
const indigo50 = Color(0xFFEEF2FF);<!-- res/values/colors.xml -->
<color name="indigo_50">#EEF2FF</color>Frequently asked questions
- What is the hex code for Tailwind indigo-50?
- In Tailwind CSS v4, indigo-50 is oklch(96.2% 0.018 272.314), which converts to #EEF2FF (rgb(238, 242, 255)) in sRGB after gamut mapping, because the OKLCH value is outside sRGB. In Tailwind v3 the same name was #EEF2FF.
- What is the difference between indigo-50 in Tailwind v3 and v4?
- v3 used the hex #EEF2FF; v4 redefined the palette in OKLCH as oklch(96.2% 0.018 272.314). In v3, indigo-50 was #EEF2FF. The v4 value is ΔE OK 0.0 away, below the point where most people can tell them apart.
- How do I use indigo-50 in plain CSS?
- Tailwind v4 defines every palette color as a theme variable, so in CSS you write var(--color-indigo-50). By default Tailwind only emits the variables your project uses; @theme static emits all of them.
- Can you use white text on indigo-50?
- White text on indigo-50 has a contrast ratio of 1.11:1, which fails AA even for large text under WCAG 2.2. Black text reaches 18.78:1 and passes both AA and AAA. In APCA terms that is Lc 0.0 for white and Lc 98.4 for black.
- Which CSS named color is closest to indigo-50?
- The closest is aliceblue (#F0F8FF) at ΔE OK 1.6, followed by whitesmoke and ghostwhite.
Last reviewed by Arielton Oberek.