#ECF4FD
Closest named color: Anti-Flash White (#EDF2F4). oklch(96.4% 0.015 251.2), rgb(236, 244, 253).
Aa
Black text reads best on this color (18.92:1).
About this color
#ECF4FD is a very light close to neutral grey. In OKLCH its lightness is 96%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Anti-Flash White (#EDF2F4), ΔE 0.011 away. Black text reads best on it, at 18.92:1.
| Hue family | Neutrals |
| Lightness | very light (96%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Anti-Flash White (#EDF2F4) |
| Black text | 18.92:1 |
| White text | 1.10:1 |
Values
| HEX | #ECF4FD |
| RGB | rgb(236, 244, 253) |
| HSL | hsl(212, 81%, 96%) |
| OKLCH | oklch(96.4% 0.015 251.2) |
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 #ECF4FD | 1.10:1 | Fails | Lc 0.0 | Not readable |
| Black text on #ECF4FD | 18.92:1 | AAA | Lc 98.9 | Preferred for body text |
| #ECF4FD text on white | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #ECF4FD text on black | 18.92:1 | AAA | Lc -100.0 | 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)
#ECF4FD
oklch(96.4% 0.015 251.2)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DAE0
oklch(88.6% 0.011 247.9)
-
Step 300
300
#B8C2CD
oklch(81% 0.019 250.6)
-
Step 400
400
#93A2B3
oklch(70.6% 0.03 251.6)
-
Step 500
500
#788CA1
oklch(63.2% 0.039 249.7)
-
Step 600
600
#61758C
oklch(55.5% 0.043 252.2)
-
Step 700
700
#506377
oklch(49.2% 0.04 250)
-
Step 800
800
#425061
oklch(42.6% 0.033 253.5)
-
Step 900
900
#38434F
oklch(37.8% 0.025 250.7)
-
Step 950
950
#21272E
oklch(27% 0.016 252.4)
#ECF4FD 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) | #F1F4FD | 0.006 |
| Deuteranopia (no green cones) | #EFF2FD | 0.006 |
| Tritanopia (no blue cones) | #E8F6F7 | 0.012 |
| Achromatopsia (no color) | #F3F3F3 | 0.015 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #ECF4FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Anti-Flash White #EDF2F4 ΔE 0.011
- Alice Blue #F0F8FF ΔE 0.012
- White Smoke #F5F5F5 ΔE 0.016
- Ghost White #F8F8FF ΔE 0.020
- Cultured #F8F9FA ΔE 0.022
- Lavender Blush #FFF0F5 ΔE 0.026
- Very Light Pink #FFF4F2 ΔE 0.028
- Azure #F0FFFF ΔE 0.029
Use #ECF4FD 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.