#ADEEF9
Closest named color: Pale Turquoise (#AFEEEE). oklch(90.9% 0.067 209.1), rgb(173, 238, 249).
Aa
Black text reads best on this color (16.37:1).
About this color
#ADEEF9 is a very light, muted teal or cyan. In OKLCH its lightness is 91%, its chroma 0.067 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Pale Turquoise (#AFEEEE), ΔE 0.015 away. Black text reads best on it, at 16.37:1.
| Hue family | Teals and cyans |
| Lightness | very light (91%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Pale Turquoise (#AFEEEE) |
| Black text | 16.37:1 |
| White text | 1.28:1 |
Values
| HEX | #ADEEF9 |
| RGB | rgb(173, 238, 249) |
| HSL | hsl(189, 86%, 83%) |
| OKLCH | oklch(90.9% 0.067 209.1) |
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 #ADEEF9 | 1.28:1 | Fails | Lc -16.1 | Dividers and decoration only |
| Black text on #ADEEF9 | 16.37:1 | AAA | Lc 89.7 | Fine for body text |
| #ADEEF9 text on white | 1.28:1 | Fails | Lc 14.0 | Not readable |
| #ADEEF9 text on black | 16.37:1 | AAA | Lc -89.9 | 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
#EDF8FA
oklch(97.1% 0.012 209.8)
-
Step 100
100
#D8EFF3
oklch(93.6% 0.025 209.3)
-
Step 200
200 (this color)
#ADEEF9
oklch(90.9% 0.067 209.1)
-
Step 300
300
#7AD0DE
oklch(80.8% 0.085 209)
-
Step 400
400
#00B5C9
oklch(70.8% 0.122 208.7)
-
Step 500
500
#009BAD
oklch(63.1% 0.109 209.2)
-
Step 600
600
#008291
oklch(55.5% 0.096 208.9)
-
Step 700
700
#006D7A
oklch(49% 0.084 209.1)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#ADEEF9 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) | #E3E9FA | 0.064 |
| Deuteranopia (no green cones) | #D6DFF9 | 0.059 |
| Tritanopia (no blue cones) | #93F4F1 | 0.034 |
| Achromatopsia (no color) | #E3E3E3 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ADEEF9
#ADEEF9
oklch(90.9% 0.067 209.1)
- #FFD6CF
#FFD6CF
oklch(90.9% 0.047 29.4)
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 #ADEEF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pale Turquoise #AFEEEE ΔE 0.015
- Diamond #B9F2FF ΔE 0.019
- Robin's Egg Blue #98EFF9 ΔE 0.021
- Pale Sky Blue #BDF6FE ΔE 0.029
- Robin Egg Blue #8AF1FE ΔE 0.033
- Powder Blue #B0E0E6 ΔE 0.038
- Duck Egg Blue #C3FBF4 ΔE 0.046
- Pale Cyan #B7FFFA ΔE 0.048
Use #ADEEF9 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.