#C9EEEF
Closest named color: Diamond (#B9F2FF). oklch(92.3% 0.038 198.5), rgb(201, 238, 239).
Aa
Black text reads best on this color (16.95:1).
About this color
#C9EEEF is a very light, muted teal or cyan. In OKLCH its lightness is 92%, its chroma 0.038 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Diamond (#B9F2FF), ΔE 0.025 away. Black text reads best on it, at 16.95:1.
| Hue family | Teals and cyans |
| Lightness | very light (92%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 16.95:1 |
| White text | 1.23:1 |
Values
| HEX | #C9EEEF |
| RGB | rgb(201, 238, 239) |
| HSL | hsl(182, 54%, 86%) |
| OKLCH | oklch(92.3% 0.038 198.5) |
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 #C9EEEF | 1.23:1 | Fails | Lc -13.7 | Not readable |
| Black text on #C9EEEF | 16.95:1 | AAA | Lc 91.8 | Preferred for body text |
| #C9EEEF text on white | 1.23:1 | Fails | Lc 11.8 | Not readable |
| #C9EEEF text on black | 16.95:1 | AAA | Lc -92.2 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100 (this color)
#C9EEEF
oklch(92.3% 0.038 198.5)
-
Step 200
200
#C5DFE0
oklch(88.5% 0.028 199.5)
-
Step 300
300
#9CCBCC
oklch(80.9% 0.049 197.9)
-
Step 400
400
#5FB0B3
oklch(70.7% 0.08 198.7)
-
Step 500
500
#1F9CA0
oklch(63.2% 0.101 198.3)
-
Step 600
600
#008488
oklch(55.7% 0.095 198.5)
-
Step 700
700
#006F72
oklch(49.2% 0.084 198.1)
-
Step 800
800
#005B5E
oklch(42.8% 0.073 198.7)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#062D2E
oklch(27.2% 0.042 197.5)
#C9EEEF 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) | #E9EAEF | 0.040 |
| Deuteranopia (no green cones) | #E1E4EF | 0.038 |
| Tritanopia (no blue cones) | #BEF1EE | 0.015 |
| Achromatopsia (no color) | #E7E7E7 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9EEEF
#C9EEEF
oklch(92.3% 0.038 198.5)
- #FFDCDC
#FFDCDC
oklch(92.4% 0.039 17.9)
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 #C9EEEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Diamond #B9F2FF ΔE 0.025
- Pale Sky Blue #BDF6FE ΔE 0.025
- Pale Turquoise #AFEEEE ΔE 0.030
- Duck Egg Blue #C3FBF4 ΔE 0.033
- Pale Silver #D8E2DC ΔE 0.035
- Platinum #E0E1DD ΔE 0.041
- Eggshell Blue #C4FFF7 ΔE 0.042
- Light Light Blue #CAFFFB ΔE 0.043
Use #C9EEEF 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.