#A4DEF3
Closest named color: Light Blue (#ADD8E6). oklch(86.8% 0.066 222.3), rgb(164, 222, 243).
Aa
Black text reads best on this color (14.32:1).
About this color
#A4DEF3 is a light, muted teal or cyan. In OKLCH its lightness is 87%, its chroma 0.066 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue (#ADD8E6), ΔE 0.021 away. Black text reads best on it, at 14.32:1.
| Hue family | Teals and cyans |
| Lightness | light (87%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Light Blue (#ADD8E6) |
| Black text | 14.32:1 |
| White text | 1.46:1 |
Values
| HEX | #A4DEF3 |
| RGB | rgb(164, 222, 243) |
| HSL | hsl(196, 77%, 80%) |
| OKLCH | oklch(86.8% 0.066 222.3) |
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 #A4DEF3 | 1.46:1 | Fails | Lc -25.1 | Dividers and decoration only |
| Black text on #A4DEF3 | 14.32:1 | AAA | Lc 81.7 | Fine for body text |
| #A4DEF3 text on white | 1.46:1 | Fails | Lc 22.1 | Dividers and decoration only |
| #A4DEF3 text on black | 14.32:1 | AAA | Lc -81.2 | 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
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#D9EEF6
oklch(93.6% 0.025 222.6)
-
Step 200
200 (this color)
#A4DEF3
oklch(86.8% 0.066 222.3)
-
Step 300
300
#81CDE8
oklch(80.9% 0.084 222.7)
-
Step 400
400
#00B2DB
oklch(70.8% 0.131 222.1)
-
Step 500
500
#0098BC
oklch(63% 0.117 222.5)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#002C38
oklch(27.2% 0.05 221.4)
#A4DEF3 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) | #D2DBF4 | 0.055 |
| Deuteranopia (no green cones) | #C5D1F3 | 0.049 |
| Tritanopia (no blue cones) | #89E5E4 | 0.043 |
| Achromatopsia (no color) | #D5D5D5 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4DEF3
#A4DEF3
oklch(86.8% 0.066 222.3)
- #FAC6B2
#FAC6B2
oklch(86.7% 0.066 42.1)
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 #A4DEF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue #ADD8E6 ΔE 0.021
- Powder Blue #B0E0E6 ΔE 0.024
- Celeste #A8DADC ΔE 0.031
- Robin's Egg Blue #98EFF9 ΔE 0.044
- Baby Blue #A2CFFE ΔE 0.048
- Pale Turquoise #AFEEEE ΔE 0.049
- Robin Egg Blue #8AF1FE ΔE 0.051
- Light Blue Grey #B7C9E2 ΔE 0.055
Use #A4DEF3 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.