#A4EFF8
Closest named color: Robin's Egg Blue (#98EFF9). oklch(90.6% 0.075 205.4), rgb(164, 239, 248).
Aa
Black text reads best on this color (16.28:1).
About this color
#A4EFF8 is a very light, moderately saturated teal or cyan. In OKLCH its lightness is 91%, its chroma 0.075 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg Blue (#98EFF9), ΔE 0.012 away. Black text reads best on it, at 16.28:1.
| Hue family | Teals and cyans |
| Lightness | very light (91%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Robin's Egg Blue (#98EFF9) |
| Black text | 16.28:1 |
| White text | 1.28:1 |
Values
| HEX | #A4EFF8 |
| RGB | rgb(164, 239, 248) |
| HSL | hsl(186, 86%, 81%) |
| OKLCH | oklch(90.6% 0.075 205.4) |
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 #A4EFF8 | 1.28:1 | Fails | Lc -16.5 | Dividers and decoration only |
| Black text on #A4EFF8 | 16.28:1 | AAA | Lc 89.3 | Fine for body text |
| #A4EFF8 text on white | 1.28:1 | Fails | Lc 14.3 | Not readable |
| #A4EFF8 text on black | 16.28:1 | AAA | Lc -89.5 | Fine 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 200.
-
Step 50
50
#ECF8FA
oklch(97.1% 0.013 208.8)
-
Step 100
100
#D6F0F3
oklch(93.7% 0.028 205.1)
-
Step 200
200 (this color)
#A4EFF8
oklch(90.6% 0.075 205.4)
-
Step 300
300
#6DD3DE
oklch(81% 0.096 204.7)
-
Step 400
400
#00B5C5
oklch(70.6% 0.121 206)
-
Step 500
500
#009CA9
oklch(63.2% 0.108 205.2)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#A4EFF8 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) | #E4E9F9 | 0.075 |
| Deuteranopia (no green cones) | #D5DEF8 | 0.068 |
| Tritanopia (no blue cones) | #84F5F2 | 0.035 |
| Achromatopsia (no color) | #E2E2E2 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4EFF8
#A4EFF8
oklch(90.6% 0.075 205.4)
- #FFD4D0
#FFD4D0
oklch(90.5% 0.049 24.3)
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 #A4EFF8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg Blue #98EFF9 ΔE 0.012
- Pale Turquoise #AFEEEE ΔE 0.016
- Robin Egg Blue #8AF1FE ΔE 0.024
- Diamond #B9F2FF ΔE 0.027
- Pale Sky Blue #BDF6FE ΔE 0.035
- Powder Blue #B0E0E6 ΔE 0.040
- Robin's Egg #6DEDFD ΔE 0.048
- Pale Cyan #B7FFFA ΔE 0.049
Use #A4EFF8 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.