#A4F5FB
Closest named color: Robin's Egg Blue (#98EFF9). oklch(92% 0.079 201.8), rgb(164, 245, 251).
Aa
Black text reads best on this color (17.03:1).
About this color
#A4F5FB is a very light, moderately saturated teal or cyan. In OKLCH its lightness is 92%, its chroma 0.079 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg Blue (#98EFF9), ΔE 0.021 away. Black text reads best on it, at 17.03:1.
| Hue family | Teals and cyans |
| Lightness | very light (92%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Robin's Egg Blue (#98EFF9) |
| Black text | 17.03:1 |
| White text | 1.23:1 |
Values
| HEX | #A4F5FB |
| RGB | rgb(164, 245, 251) |
| HSL | hsl(184, 92%, 81%) |
| OKLCH | oklch(92% 0.079 201.8) |
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 #A4F5FB | 1.23:1 | Fails | Lc -13.3 | Not readable |
| Black text on #A4F5FB | 17.03:1 | AAA | Lc 92.1 | Preferred for body text |
| #A4F5FB text on white | 1.23:1 | Fails | Lc 11.4 | Not readable |
| #A4F5FB text on black | 17.03:1 | AAA | Lc -92.6 | 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 100.
-
Step 50
50
#ECF8F9
oklch(97% 0.013 202.9)
-
Step 100
100 (this color)
#A4F5FB
oklch(92% 0.079 201.8)
-
Step 200
200
#AEE5E9
oklch(88.5% 0.056 201.8)
-
Step 300
300
#65D4DC
oklch(80.8% 0.102 201.7)
-
Step 400
400
#00B6C0
oklch(70.7% 0.12 201.8)
-
Step 500
500
#009CA5
oklch(63.1% 0.107 202)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#A4F5FB 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) | #EAEEFC | 0.081 |
| Deuteranopia (no green cones) | #DAE2FC | 0.075 |
| Tritanopia (no blue cones) | #82FBF7 | 0.034 |
| Achromatopsia (no color) | #E7E7E7 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4F5FB
#A4F5FB
oklch(92% 0.079 201.8)
- #FFDBD9
#FFDBD9
oklch(92.1% 0.04 21.7)
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 #A4F5FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg Blue #98EFF9 ΔE 0.021
- Pale Turquoise #AFEEEE ΔE 0.022
- Diamond #B9F2FF ΔE 0.024
- Pale Sky Blue #BDF6FE ΔE 0.027
- Robin Egg Blue #8AF1FE ΔE 0.028
- Pale Cyan #B7FFFA ΔE 0.035
- Duck Egg Blue #C3FBF4 ΔE 0.040
- Pale Aqua #B8FFEB ΔE 0.045
Use #A4F5FB 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.