#EFF8FF
Closest named color: Alice Blue (#F0F8FF). oklch(97.4% 0.013 241), rgb(239, 248, 255).
Aa
Black text reads best on this color (19.54:1).
About this color
#EFF8FF is a very light close to neutral grey. In OKLCH its lightness is 97%, its chroma 0.013. It has too little chroma to lean warm or cool. The nearest named color is Alice Blue (#F0F8FF), ΔE 0.001 away. Black text reads best on it, at 19.54:1.
| Hue family | Neutrals |
| Lightness | very light (97%) |
| Chroma | close to neutral grey (0.013) |
| Temperature | neutral |
| Nearest name | Alice Blue (#F0F8FF) |
| Black text | 19.54:1 |
| White text | 1.07:1 |
Values
| HEX | #EFF8FF |
| RGB | rgb(239, 248, 255) |
| HSL | hsl(206, 100%, 97%) |
| OKLCH | oklch(97.4% 0.013 241) |
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 #EFF8FF | 1.07:1 | Fails | Lc 0.0 | Not readable |
| Black text on #EFF8FF | 19.54:1 | AAA | Lc 101.0 | Preferred for body text |
| #EFF8FF text on white | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #EFF8FF text on black | 19.54:1 | AAA | Lc -102.4 | 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)
#EFF8FF
oklch(97.4% 0.013 241)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DADF
oklch(88.5% 0.009 242.9)
-
Step 300
300
#B7C2CB
oklch(80.8% 0.018 242.5)
-
Step 400
400
#92A3B1
oklch(70.7% 0.028 242.9)
-
Step 500
500
#778D9D
oklch(63.2% 0.035 239.7)
-
Step 600
600
#607788
oklch(55.7% 0.038 240.4)
-
Step 700
700
#4F6473
oklch(49.2% 0.035 239.5)
-
Step 800
800
#41515E
oklch(42.6% 0.03 243)
-
Step 900
900
#37434D
oklch(37.6% 0.023 243.5)
-
Step 950
950
#20272D
oklch(26.8% 0.015 244.2)
#EFF8FF 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) | #F5F8FF | 0.008 |
| Deuteranopia (no green cones) | #F3F6FF | 0.007 |
| Tritanopia (no blue cones) | #EBFAFA | 0.011 |
| Achromatopsia (no color) | #F7F7F7 | 0.014 |
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 #EFF8FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Alice Blue #F0F8FF ΔE 0.001
- Ghost White #F8F8FF ΔE 0.012
- Cultured #F8F9FA ΔE 0.014
- White Smoke #F5F5F5 ΔE 0.014
- Anti-Flash White #EDF2F4 ΔE 0.018
- Azure #F0FFFF ΔE 0.018
- Snow #FFFAFA ΔE 0.023
- Mint Cream #F5FFFA ΔE 0.023
Use #EFF8FF 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.