#A4ECFF
Closest named color: Robin's Egg Blue (#98EFF9). oklch(90.2% 0.076 216.1), rgb(164, 236, 255).
Aa
Black text reads best on this color (16.02:1).
About this color
#A4ECFF is a very light, moderately saturated teal or cyan. In OKLCH its lightness is 90%, its chroma 0.076 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg Blue (#98EFF9), ΔE 0.018 away. Black text reads best on it, at 16.02:1.
| Hue family | Teals and cyans |
| Lightness | very light (90%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Robin's Egg Blue (#98EFF9) |
| Black text | 16.02:1 |
| White text | 1.31:1 |
Values
| HEX | #A4ECFF |
| RGB | rgb(164, 236, 255) |
| HSL | hsl(193, 100%, 82%) |
| OKLCH | oklch(90.2% 0.076 216.1) |
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 #A4ECFF | 1.31:1 | Fails | Lc -17.6 | Dividers and decoration only |
| Black text on #A4ECFF | 16.02:1 | AAA | Lc 88.3 | Fine for body text |
| #A4ECFF text on white | 1.31:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #A4ECFF text on black | 16.02:1 | AAA | Lc -88.5 | 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
#ECF8FB
oklch(97.1% 0.013 214.4)
-
Step 100
100
#D6EFF6
oklch(93.6% 0.028 216.4)
-
Step 200
200 (this color)
#A4ECFF
oklch(90.2% 0.076 216.1)
-
Step 300
300
#70D1E9
oklch(81% 0.097 215.9)
-
Step 400
400
#00B3D2
oklch(70.6% 0.125 216)
-
Step 500
500
#009AB5
oklch(63.2% 0.112 216)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006C80
oklch(49% 0.087 216.4)
-
Step 800
800
#005969
oklch(42.7% 0.076 215.4)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#A4ECFF 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) | #DFE7FF | 0.068 |
| Deuteranopia (no green cones) | #D0DCFF | 0.062 |
| Tritanopia (no blue cones) | #82F3F2 | 0.043 |
| Achromatopsia (no color) | #E1E1E1 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4ECFF
#A4ECFF
oklch(90.2% 0.076 216.1)
- #FFD3C7
#FFD3C7
oklch(90.1% 0.052 35.7)
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 #A4ECFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg Blue #98EFF9 ΔE 0.018
- Robin Egg Blue #8AF1FE ΔE 0.027
- Pale Turquoise #AFEEEE ΔE 0.028
- Diamond #B9F2FF ΔE 0.029
- Powder Blue #B0E0E6 ΔE 0.039
- Pale Sky Blue #BDF6FE ΔE 0.040
- Robin's Egg #6DEDFD ΔE 0.048
- Light Blue #ADD8E6 ΔE 0.053
Use #A4ECFF 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.