#C9EFFA
Closest named color: Diamond (#B9F2FF). oklch(92.9% 0.042 217.2), rgb(201, 239, 250).
Aa
Black text reads best on this color (17.21:1).
About this color
#C9EFFA is a very light, muted teal or cyan. In OKLCH its lightness is 93%, its chroma 0.042 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Diamond (#B9F2FF), ΔE 0.018 away. Black text reads best on it, at 17.21:1.
| Hue family | Teals and cyans |
| Lightness | very light (93%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 17.21:1 |
| White text | 1.22:1 |
Values
| HEX | #C9EFFA |
| RGB | rgb(201, 239, 250) |
| HSL | hsl(193, 83%, 88%) |
| OKLCH | oklch(92.9% 0.042 217.2) |
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 #C9EFFA | 1.22:1 | Fails | Lc -12.6 | Not readable |
| Black text on #C9EFFA | 17.21:1 | AAA | Lc 92.7 | Preferred for body text |
| #C9EFFA text on white | 1.22:1 | Fails | Lc 10.8 | Not readable |
| #C9EFFA text on black | 17.21:1 | AAA | Lc -93.2 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100 (this color)
#C9EFFA
oklch(92.9% 0.042 217.2)
-
Step 200
200
#C4DEE6
oklch(88.4% 0.03 218.2)
-
Step 300
300
#99CAD8
oklch(80.9% 0.055 217.2)
-
Step 400
400
#5BAEC4
oklch(70.7% 0.087 217.3)
-
Step 500
500
#0D99B5
oklch(63.1% 0.111 217.2)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A59
oklch(37.7% 0.067 217.2)
-
Step 950
950
#032C35
oklch(27.1% 0.046 216.4)
#C9EFFA 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) | #E7ECFB | 0.038 |
| Deuteranopia (no green cones) | #DFE6FA | 0.034 |
| Tritanopia (no blue cones) | #BBF3F2 | 0.024 |
| Achromatopsia (no color) | #E8E8E8 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9EFFA
#C9EFFA
oklch(92.9% 0.042 217.2)
- #FFDFD6
#FFDFD6
oklch(92.8% 0.038 36.2)
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 #C9EFFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Diamond #B9F2FF ΔE 0.018
- Pale Sky Blue #BDF6FE ΔE 0.020
- Pale Turquoise #AFEEEE ΔE 0.036
- Duck Egg Blue #C3FBF4 ΔE 0.036
- Pale Blue #D0FEFE ΔE 0.040
- Lavender #E6E6FA ΔE 0.041
- Light Light Blue #CAFFFB ΔE 0.042
- Eggshell Blue #C4FFF7 ΔE 0.044
Use #C9EFFA 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.