#C9EFEF
Closest named color: Pale Sky Blue (#BDF6FE). oklch(92.5% 0.039 196.5), rgb(201, 239, 239).
Aa
Black text reads best on this color (17.07:1).
About this color
#C9EFEF is a very light, muted teal or cyan. In OKLCH its lightness is 93%, its chroma 0.039 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Pale Sky Blue (#BDF6FE), ΔE 0.024 away. Black text reads best on it, at 17.07:1.
| Hue family | Teals and cyans |
| Lightness | very light (93%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Pale Sky Blue (#BDF6FE) |
| Black text | 17.07:1 |
| White text | 1.22:1 |
Values
| HEX | #C9EFEF |
| RGB | rgb(201, 239, 239) |
| HSL | hsl(180, 54%, 86%) |
| OKLCH | oklch(92.5% 0.039 196.5) |
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 #C9EFEF | 1.22:1 | Fails | Lc -13.2 | Not readable |
| Black text on #C9EFEF | 17.07:1 | AAA | Lc 92.2 | Preferred for body text |
| #C9EFEF text on white | 1.22:1 | Fails | Lc 11.3 | Not readable |
| #C9EFEF text on black | 17.07:1 | AAA | Lc -92.7 | 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)
#C9EFEF
oklch(92.5% 0.039 196.5)
-
Step 200
200
#C5DFDF
oklch(88.5% 0.028 196.7)
-
Step 300
300
#9BCBCB
oklch(80.8% 0.05 196.2)
-
Step 400
400
#5DB0B1
oklch(70.6% 0.081 196.5)
-
Step 500
500
#179C9E
oklch(63% 0.103 196.5)
-
Step 600
600
#008486
oklch(55.6% 0.095 196.7)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#005B5C
oklch(42.7% 0.073 196.1)
-
Step 900
900
#004C4D
oklch(37.8% 0.064 196.3)
-
Step 950
950
#042D2D
oklch(27.1% 0.043 194.9)
#C9EFEF 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) | #EAEBEF | 0.042 |
| Deuteranopia (no green cones) | #E2E5EF | 0.039 |
| Tritanopia (no blue cones) | #BEF2EF | 0.014 |
| Achromatopsia (no color) | #E8E8E8 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9EFEF
#C9EFEF
oklch(92.5% 0.039 196.5)
- #FFDDDD
#FFDDDD
oklch(92.6% 0.038 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 #C9EFEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pale Sky Blue #BDF6FE ΔE 0.024
- Diamond #B9F2FF ΔE 0.025
- Pale Turquoise #AFEEEE ΔE 0.030
- Duck Egg Blue #C3FBF4 ΔE 0.030
- Pale Silver #D8E2DC ΔE 0.037
- Eggshell Blue #C4FFF7 ΔE 0.040
- Light Light Blue #CAFFFB ΔE 0.040
- Pale Blue #D0FEFE ΔE 0.041
Use #C9EFEF 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.