#A4DEE9
Closest named color: Powder Blue (#B0E0E6). oklch(86.5% 0.061 210.6), rgb(164, 222, 233).
Aa
Black text reads best on this color (14.20:1).
About this color
#A4DEE9 is a light, muted teal or cyan. In OKLCH its lightness is 86%, its chroma 0.061 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Powder Blue (#B0E0E6), ΔE 0.016 away. Black text reads best on it, at 14.20:1.
| Hue family | Teals and cyans |
| Lightness | light (86%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Powder Blue (#B0E0E6) |
| Black text | 14.20:1 |
| White text | 1.47:1 |
Values
| HEX | #A4DEE9 |
| RGB | rgb(164, 222, 233) |
| HSL | hsl(190, 61%, 78%) |
| OKLCH | oklch(86.5% 0.061 210.6) |
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 #A4DEE9 | 1.47:1 | Fails | Lc -25.6 | Dividers and decoration only |
| Black text on #A4DEE9 | 14.20:1 | AAA | Lc 81.2 | Fine for body text |
| #A4DEE9 text on white | 1.47:1 | Fails | Lc 22.5 | Dividers and decoration only |
| #A4DEE9 text on black | 14.20:1 | AAA | Lc -80.7 | 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
#EEF7F9
oklch(97% 0.01 212.5)
-
Step 100
100
#DAEEF2
oklch(93.6% 0.022 211)
-
Step 200
200 (this color)
#A4DEE9
oklch(86.5% 0.061 210.6)
-
Step 300
300
#82CFDD
oklch(80.9% 0.078 210.3)
-
Step 400
400
#00B4CB
oklch(70.6% 0.122 210.8)
-
Step 500
500
#009BAE
oklch(63.2% 0.109 210)
-
Step 600
600
#008293
oklch(55.6% 0.096 210.7)
-
Step 700
700
#006D7C
oklch(49% 0.085 211.2)
-
Step 800
800
#005A66
oklch(42.9% 0.074 210.4)
-
Step 900
900
#004B55
oklch(37.8% 0.065 210)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#A4DEE9 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) | #D4DAEA | 0.058 |
| Deuteranopia (no green cones) | #C8D0E9 | 0.054 |
| Tritanopia (no blue cones) | #8DE3E1 | 0.031 |
| Achromatopsia (no color) | #D4D4D4 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4DEE9
#A4DEE9
oklch(86.5% 0.061 210.6)
- #F8C4BB
#F8C4BB
oklch(86.4% 0.061 29.7)
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 #A4DEE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Powder Blue #B0E0E6 ΔE 0.016
- Light Blue #ADD8E6 ΔE 0.017
- Celeste #A8DADC ΔE 0.018
- Robin's Egg Blue #98EFF9 ΔE 0.044
- Pale Turquoise #AFEEEE ΔE 0.045
- Robin Egg Blue #8AF1FE ΔE 0.052
- Cadet Gray #CED4DA ΔE 0.053
- Light Blue Grey #B7C9E2 ΔE 0.056
Use #A4DEE9 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.