#ECFFF9
Closest named color: Azure (#F0FFFF). oklch(98.4% 0.021 175), rgb(236, 255, 249).
Aa
Black text reads best on this color (20.23:1).
About this color
#ECFFF9 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 0.010 away. Black text reads best on it, at 20.23:1.
| Hue family | Neutrals |
| Lightness | very light (98%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Azure (#F0FFFF) |
| Black text | 20.23:1 |
| White text | 1.03:1 |
Values
| HEX | #ECFFF9 |
| RGB | rgb(236, 255, 249) |
| HSL | hsl(161, 100%, 96%) |
| OKLCH | oklch(98.4% 0.021 175) |
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 #ECFFF9 | 1.03:1 | Fails | Lc 0.0 | Not readable |
| Black text on #ECFFF9 | 20.23:1 | AAA | Lc 103.5 | Preferred for body text |
| #ECFFF9 text on white | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #ECFFF9 text on black | 20.23:1 | AAA | Lc -105.0 | 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)
#ECFFF9
oklch(98.4% 0.021 175)
-
Step 100
100
#E5ECE9
oklch(93.7% 0.008 168.7)
-
Step 200
200
#CFDDD8
oklch(88.6% 0.016 172.6)
-
Step 300
300
#AFC7BF
oklch(80.9% 0.028 173.5)
-
Step 400
400
#84AA9F
oklch(70.7% 0.044 175.4)
-
Step 500
500
#659587
oklch(63.1% 0.056 174.2)
-
Step 600
600
#4B7F71
oklch(55.6% 0.06 174.9)
-
Step 700
700
#3B6B5F
oklch(49% 0.056 175.9)
-
Step 800
800
#32584D
oklch(42.8% 0.048 173.5)
-
Step 900
900
#2C4840
oklch(37.7% 0.037 174.3)
-
Step 950
950
#1A2A26
oklch(26.9% 0.023 177.2)
#ECFFF9 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) | #FDFCF9 | 0.022 |
| Deuteranopia (no green cones) | #FAFAF9 | 0.021 |
| Tritanopia (no blue cones) | #E8FFFD | 0.007 |
| Achromatopsia (no color) | #FBFBFB | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ECFFF9
#ECFFF9
oklch(98.4% 0.021 175)
- #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 #ECFFF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azure #F0FFFF ΔE 0.010
- Mint Cream #F5FFFA ΔE 0.012
- Honeydew #F0FFF0 ΔE 0.012
- Light Cyan #E0FFFF ΔE 0.016
- Cultured #F8F9FA ΔE 0.021
- Alice Blue #F0F8FF ΔE 0.023
- Pale Grey #FDFDFE ΔE 0.024
- Ice Blue #D7FFFE ΔE 0.025
Use #ECFFF9 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.