#EFFDFF
Closest named color: Azure (#F0FFFF). oklch(98.4% 0.015 207.1), rgb(239, 253, 255).
Aa
Black text reads best on this color (20.16:1).
About this color
#EFFDFF is a very light close to neutral grey. In OKLCH its lightness is 98%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Azure (#F0FFFF), ΔE 0.005 away. Black text reads best on it, at 20.16:1.
| Hue family | Neutrals |
| Lightness | very light (98%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Azure (#F0FFFF) |
| Black text | 20.16:1 |
| White text | 1.04:1 |
Values
| HEX | #EFFDFF |
| RGB | rgb(239, 253, 255) |
| HSL | hsl(187, 100%, 97%) |
| OKLCH | oklch(98.4% 0.015 207.1) |
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 #EFFDFF | 1.04:1 | Fails | Lc 0.0 | Not readable |
| Black text on #EFFDFF | 20.16:1 | AAA | Lc 103.2 | Preferred for body text |
| #EFFDFF text on white | 1.04:1 | Fails | Lc 0.0 | Not readable |
| #EFFDFF text on black | 20.16:1 | AAA | Lc -104.7 | 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)
#EFFDFF
oklch(98.4% 0.015 207.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D1DBDD
oklch(88.4% 0.011 211)
-
Step 300
300
#B3C4C7
oklch(80.8% 0.019 209.4)
-
Step 400
400
#8BA6AA
oklch(70.6% 0.031 207.4)
-
Step 500
500
#6E9196
oklch(63.2% 0.04 207.1)
-
Step 600
600
#557B80
oklch(55.6% 0.043 206.3)
-
Step 700
700
#45676C
oklch(49% 0.04 207.5)
-
Step 800
800
#395458
oklch(42.6% 0.033 207.5)
-
Step 900
900
#324648
oklch(37.8% 0.025 203.8)
-
Step 950
950
#1D292A
oklch(27% 0.017 202.6)
#EFFDFF 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) | #FBFCFF | 0.015 |
| Deuteranopia (no green cones) | #F8F9FF | 0.015 |
| Tritanopia (no blue cones) | #EBFEFE | 0.006 |
| Achromatopsia (no color) | #FAFAFA | 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 #EFFDFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azure #F0FFFF ΔE 0.005
- Mint Cream #F5FFFA ΔE 0.012
- Alice Blue #F0F8FF ΔE 0.013
- Cultured #F8F9FA ΔE 0.014
- Ghost White #F8F8FF ΔE 0.016
- Pale Grey #FDFDFE ΔE 0.018
- Light Cyan #E0FFFF ΔE 0.019
- White Smoke #F5F5F5 ΔE 0.021
Use #EFFDFF 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.