#ECF1FF
Closest named color: Anti-Flash White (#EDF2F4). oklch(95.8% 0.02 270.2), rgb(236, 241, 255).
Aa
Black text reads best on this color (18.59:1).
About this color
#ECF1FF 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 0.016 away. Black text reads best on it, at 18.59:1.
| Hue family | Neutrals |
| Lightness | very light (96%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Anti-Flash White (#EDF2F4) |
| Black text | 18.59:1 |
| White text | 1.12:1 |
Values
| HEX | #ECF1FF |
| RGB | rgb(236, 241, 255) |
| HSL | hsl(224, 100%, 96%) |
| OKLCH | oklch(95.8% 0.02 270.2) |
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 #ECF1FF | 1.12:1 | Fails | Lc 0.0 | Not readable |
| Black text on #ECF1FF | 18.59:1 | AAA | Lc 97.7 | Preferred for body text |
| #ECF1FF text on white | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #ECF1FF text on black | 18.59:1 | AAA | Lc -98.7 | 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)
#ECF1FF
oklch(95.8% 0.02 270.2)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E3
oklch(88.5% 0.014 268.5)
-
Step 300
300
#BAC0D1
oklch(80.8% 0.025 270.3)
-
Step 400
400
#97A0BA
oklch(70.7% 0.039 270.3)
-
Step 500
500
#7D88A9
oklch(63% 0.051 270.5)
-
Step 600
600
#667295
oklch(55.6% 0.057 269.8)
-
Step 700
700
#55607F
oklch(49.2% 0.052 269.3)
-
Step 800
800
#464E67
oklch(42.7% 0.043 270.7)
-
Step 900
900
#3B4154
oklch(37.8% 0.034 271.1)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#ECF1FF 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) | #EDF2FF | 0.003 |
| Deuteranopia (no green cones) | #ECF0FF | 0.003 |
| Tritanopia (no blue cones) | #E8F4F5 | 0.019 |
| Achromatopsia (no color) | #F1F1F1 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ECF1FF
#ECF1FF
oklch(95.8% 0.02 270.2)
- #F6F1E3
#F6F1E3
oklch(95.8% 0.019 90.5)
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 #ECF1FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Anti-Flash White #EDF2F4 ΔE 0.016
- Alice Blue #F0F8FF ΔE 0.019
- White Smoke #F5F5F5 ΔE 0.023
- Ghost White #F8F8FF ΔE 0.025
- Lavender Blush #FFF0F5 ΔE 0.027
- Lavender #E6E6FA ΔE 0.029
- Cultured #F8F9FA ΔE 0.029
- Very Light Pink #FFF4F2 ΔE 0.032
Use #ECF1FF 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.