#EFEFFB
Closest named color: Anti-Flash White (#EDF2F4). oklch(95.6% 0.016 286.1), rgb(239, 239, 251).
Aa
Black text reads best on this color (18.40:1).
About this color
#EFEFFB is a very light close to neutral grey. In OKLCH its lightness is 96%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Anti-Flash White (#EDF2F4), ΔE 0.014 away. Black text reads best on it, at 18.40:1.
| Hue family | Neutrals |
| Lightness | very light (96%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Anti-Flash White (#EDF2F4) |
| Black text | 18.40:1 |
| White text | 1.14:1 |
Values
| HEX | #EFEFFB |
| RGB | rgb(239, 239, 251) |
| HSL | hsl(240, 60%, 96%) |
| OKLCH | oklch(95.6% 0.016 286.1) |
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 #EFEFFB | 1.14:1 | Fails | Lc -7.7 | Not readable |
| Black text on #EFEFFB | 18.40:1 | AAA | Lc 97.1 | Preferred for body text |
| #EFEFFB text on white | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #EFEFFB text on black | 18.40:1 | AAA | Lc -98.0 | 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)
#EFEFFB
oklch(95.6% 0.016 286.1)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E1
oklch(88.5% 0.012 286.1)
-
Step 300
300
#BFBFCE
oklch(80.9% 0.021 285.9)
-
Step 400
400
#9E9EB5
oklch(70.7% 0.033 285.5)
-
Step 500
500
#8786A2
oklch(63.1% 0.042 286.8)
-
Step 600
600
#71708D
oklch(55.7% 0.045 286.4)
-
Step 700
700
#5E5D78
oklch(49% 0.043 286.4)
-
Step 800
800
#4D4C62
oklch(42.6% 0.036 286.8)
-
Step 900
900
#404050
oklch(37.8% 0.027 285)
-
Step 950
950
#25252F
oklch(26.9% 0.018 285.1)
#EFEFFB 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) | #ECF0FC | 0.004 |
| Deuteranopia (no green cones) | #ECF0FB | 0.004 |
| Tritanopia (no blue cones) | #EDF1F3 | 0.014 |
| Achromatopsia (no color) | #F0F0F0 | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EFEFFB
#EFEFFB
oklch(95.6% 0.016 286.1)
- #F1F1E5
#F1F1E5
oklch(95.5% 0.016 106.7)
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 #EFEFFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Anti-Flash White #EDF2F4 ΔE 0.014
- White Smoke #F5F5F5 ΔE 0.022
- Alice Blue #F0F8FF ΔE 0.022
- Lavender Blush #FFF0F5 ΔE 0.023
- Ghost White #F8F8FF ΔE 0.026
- Lavender #E6E6FA ΔE 0.027
- Very Light Pink #FFF4F2 ΔE 0.030
- Cultured #F8F9FA ΔE 0.030
Use #EFEFFB 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.