#E4F5FB
Closest named color: Anti-Flash White (#EDF2F4). oklch(95.9% 0.02 220.9), rgb(228, 245, 251).
Aa
Black text reads best on this color (18.75:1).
About this color
#E4F5FB is a very light close to neutral grey. In OKLCH its lightness is 96%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Anti-Flash White (#EDF2F4), ΔE 0.014 away. Black text reads best on it, at 18.75:1.
| Hue family | Neutrals |
| Lightness | very light (96%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Anti-Flash White (#EDF2F4) |
| Black text | 18.75:1 |
| White text | 1.11:1 |
Values
| HEX | #E4F5FB |
| RGB | rgb(228, 245, 251) |
| HSL | hsl(196, 74%, 94%) |
| OKLCH | oklch(95.9% 0.02 220.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #E4F5FB | 1.11:1 | Fails | Lc 0.0 | Not readable |
| Black text on #E4F5FB | 18.75:1 | AAA | Lc 98.3 | Preferred for body text |
| #E4F5FB text on white | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #E4F5FB text on black | 18.75:1 | AAA | Lc -99.3 | Preferred for body text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 50.
-
Step 50
50 (this color)
#E4F5FB
oklch(95.9% 0.02 220.9)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D0DBE0
oklch(88.5% 0.014 226.6)
-
Step 300
300
#B0C5CC
oklch(81% 0.025 219.8)
-
Step 400
400
#85A7B2
oklch(70.7% 0.041 219.5)
-
Step 500
500
#6691A0
oklch(63.1% 0.052 221.6)
-
Step 600
600
#4C7B8B
oklch(55.5% 0.057 221.7)
-
Step 700
700
#3D6876
oklch(49.2% 0.053 220.8)
-
Step 800
800
#335560
oklch(42.8% 0.043 220.5)
-
Step 900
900
#2D464E
oklch(37.7% 0.034 219.9)
-
Step 950
950
#1B292E
oklch(27% 0.021 222)
#E4F5FB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #F1F4FB | 0.017 |
| Deuteranopia (no green cones) | #EDF1FB | 0.015 |
| Tritanopia (no blue cones) | #DEF7F7 | 0.012 |
| Achromatopsia (no color) | #F2F2F2 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E4F5FB
#E4F5FB
oklch(95.9% 0.02 220.9)
- #FEEEE8
#FEEEE8
oklch(96% 0.019 41.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #E4F5FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Anti-Flash White #EDF2F4 ΔE 0.014
- Alice Blue #F0F8FF ΔE 0.018
- White Smoke #F5F5F5 ΔE 0.022
- Light Cyan #E0FFFF ΔE 0.025
- Ice Blue #D7FFFE ΔE 0.028
- Ghost White #F8F8FF ΔE 0.028
- Very Pale Blue #D6FFFE ΔE 0.028
- Very Light Blue #D5FFFF ΔE 0.029
Use #E4F5FB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.