#ECFFFB
Closest named color: Azure (#F0FFFF). oklch(98.5% 0.021 181.9), rgb(236, 255, 251).
Aa
Black text reads best on this color (20.26:1).
About this color
#ECFFFB is a very light close to neutral grey. In OKLCH its lightness is 98%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Azure (#F0FFFF), ΔE 0.008 away. Black text reads best on it, at 20.26:1.
| Hue family | Neutrals |
| Lightness | very light (98%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Azure (#F0FFFF) |
| Black text | 20.26:1 |
| White text | 1.03:1 |
Values
| HEX | #ECFFFB |
| RGB | rgb(236, 255, 251) |
| HSL | hsl(167, 100%, 96%) |
| OKLCH | oklch(98.5% 0.021 181.9) |
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 #ECFFFB | 1.03:1 | Fails | Lc 0.0 | Not readable |
| Black text on #ECFFFB | 20.26:1 | AAA | Lc 103.5 | Preferred for body text |
| #ECFFFB text on white | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #ECFFFB text on black | 20.26:1 | AAA | Lc -105.1 | 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)
#ECFFFB
oklch(98.5% 0.021 181.9)
-
Step 100
100
#E5ECEA
oklch(93.7% 0.008 177.3)
-
Step 200
200
#CFDCDA
oklch(88.4% 0.014 185.9)
-
Step 300
300
#AFC6C2
oklch(80.8% 0.026 184.1)
-
Step 400
400
#84AAA2
oklch(70.8% 0.043 180.7)
-
Step 500
500
#64958C
oklch(63.2% 0.055 181.7)
-
Step 600
600
#4A7F76
oklch(55.7% 0.059 182)
-
Step 700
700
#3B6B63
oklch(49.1% 0.054 182.1)
-
Step 800
800
#315751
oklch(42.6% 0.045 182.9)
-
Step 900
900
#2C4843
oklch(37.8% 0.035 181.9)
-
Step 950
950
#1A2A27
oklch(27% 0.022 181.6)
#ECFFFB 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) | #FDFDFB | 0.022 |
| Deuteranopia (no green cones) | #F9FAFB | 0.020 |
| Tritanopia (no blue cones) | #E8FFFE | 0.006 |
| Achromatopsia (no color) | #FBFBFB | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ECFFFB
#ECFFFB
oklch(98.5% 0.021 181.9)
- #FFF8FA
#FFF8FA
oklch(98.5% 0.008 357.8)
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 #ECFFFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azure #F0FFFF ΔE 0.008
- Mint Cream #F5FFFA ΔE 0.011
- Honeydew #F0FFF0 ΔE 0.015
- Light Cyan #E0FFFF ΔE 0.015
- Cultured #F8F9FA ΔE 0.020
- Alice Blue #F0F8FF ΔE 0.021
- Pale Grey #FDFDFE ΔE 0.023
- Ghost White #F8F8FF ΔE 0.025
Use #ECFFFB 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.