#C9FAEF
Closest named color: Duck Egg Blue (#C3FBF4). oklch(94.8% 0.052 179.9), rgb(201, 250, 239).
Aa
Black text reads best on this color (18.40:1).
About this color
#C9FAEF is a very light, muted teal or cyan. In OKLCH its lightness is 95%, its chroma 0.052 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Duck Egg Blue (#C3FBF4), ΔE 0.008 away. Black text reads best on it, at 18.40:1.
| Hue family | Teals and cyans |
| Lightness | very light (95%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Duck Egg Blue (#C3FBF4) |
| Black text | 18.40:1 |
| White text | 1.14:1 |
Values
| HEX | #C9FAEF |
| RGB | rgb(201, 250, 239) |
| HSL | hsl(167, 83%, 88%) |
| OKLCH | oklch(94.8% 0.052 179.9) |
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 #C9FAEF | 1.14:1 | Fails | Lc -7.6 | Not readable |
| Black text on #C9FAEF | 18.40:1 | AAA | Lc 97.1 | Preferred for body text |
| #C9FAEF text on white | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #C9FAEF text on black | 18.40:1 | AAA | Lc -98.0 | 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
#EFF7F6
oklch(97% 0.009 188.1)
-
Step 100
100 (this color)
#C9FAEF
oklch(94.8% 0.052 179.9)
-
Step 200
200
#C0E2DA
oklch(88.6% 0.037 179.6)
-
Step 300
300
#90CFC2
oklch(80.8% 0.067 180.2)
-
Step 400
400
#43B6A3
oklch(70.6% 0.107 180.1)
-
Step 500
500
#00A08C
oklch(63.2% 0.115 179.7)
-
Step 600
600
#008675
oklch(55.5% 0.101 179.7)
-
Step 700
700
#007162
oklch(49.1% 0.09 179.3)
-
Step 800
800
#005D50
oklch(42.8% 0.078 178.9)
-
Step 900
900
#004D43
oklch(37.7% 0.068 180.3)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#C9FAEF 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) | #F6F4EF | 0.056 |
| Deuteranopia (no green cones) | #ECEDF0 | 0.052 |
| Tritanopia (no blue cones) | #BCFCF7 | 0.016 |
| Achromatopsia (no color) | #F0F0F0 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9FAEF
#C9FAEF
oklch(94.8% 0.052 179.9)
- #FFE7ED
#FFE7ED
oklch(94.9% 0.027 0.7)
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 #C9FAEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Duck Egg Blue #C3FBF4 ΔE 0.008
- Eggshell Blue #C4FFF7 ΔE 0.014
- Light Light Blue #CAFFFB ΔE 0.018
- Pale Cyan #B7FFFA ΔE 0.023
- Pale Blue #D0FEFE ΔE 0.023
- Pale Aqua #B8FFEB ΔE 0.024
- Ice #D6FFFA ΔE 0.025
- Really Light Blue #D4FFFF ΔE 0.027
Use #C9FAEF 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.