#EFFEF9
Closest named color: Azure (#F0FFFF). oklch(98.5% 0.017 174.1), rgb(239, 254, 249).
Aa
Black text reads best on this color (20.21:1).
About this color
#EFFEF9 is a very light close to neutral grey. In OKLCH its lightness is 98%, its chroma 0.017. 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 20.21:1.
| Hue family | Neutrals |
| Lightness | very light (98%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Azure (#F0FFFF) |
| Black text | 20.21:1 |
| White text | 1.03:1 |
Values
| HEX | #EFFEF9 |
| RGB | rgb(239, 254, 249) |
| HSL | hsl(160, 88%, 97%) |
| OKLCH | oklch(98.5% 0.017 174.1) |
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 #EFFEF9 | 1.03:1 | Fails | Lc 0.0 | Not readable |
| Black text on #EFFEF9 | 20.21:1 | AAA | Lc 103.4 | Preferred for body text |
| #EFFEF9 text on white | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #EFFEF9 text on black | 20.21:1 | AAA | Lc -104.9 | 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)
#EFFEF9
oklch(98.5% 0.017 174.1)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D1DCD8
oklch(88.5% 0.013 172.3)
-
Step 300
300
#B3C5BF
oklch(80.8% 0.021 173.8)
-
Step 400
400
#8BA89F
oklch(70.7% 0.035 174.5)
-
Step 500
500
#6D9387
oklch(63.1% 0.046 173.3)
-
Step 600
600
#557D71
oklch(55.6% 0.049 173.8)
-
Step 700
700
#45695F
oklch(49% 0.044 175.1)
-
Step 800
800
#39564D
oklch(42.7% 0.038 173.1)
-
Step 900
900
#314740
oklch(37.7% 0.03 172.9)
-
Step 950
950
#1D2926
oklch(26.9% 0.017 177.9)
#EFFEF9 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 | 0.018 |
| Deuteranopia (no green cones) | #FAFAF9 | 0.017 |
| Tritanopia (no blue cones) | #ECFEFC | 0.005 |
| Achromatopsia (no color) | #FBFBFB | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EFFEF9
#EFFEF9
oklch(98.5% 0.017 174.1)
- #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 #EFFEF9, 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 0.008
- Honeydew #F0FFF0 ΔE 0.013
- Cultured #F8F9FA ΔE 0.017
- Light Cyan #E0FFFF ΔE 0.019
- Alice Blue #F0F8FF ΔE 0.020
- Pale Grey #FDFDFE ΔE 0.020
- Floral White #FFFAF0 ΔE 0.022
Use #EFFEF9 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.