#CDF4EF
Closest named color: Duck Egg Blue (#C3FBF4). oklch(93.8% 0.041 187), rgb(205, 244, 239).
Aa
Black text reads best on this color (17.78:1).
About this color
#CDF4EF is a very light, muted teal or cyan. In OKLCH its lightness is 94%, its chroma 0.041 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Duck Egg Blue (#C3FBF4), ΔE 0.019 away. Black text reads best on it, at 17.78:1.
| Hue family | Teals and cyans |
| Lightness | very light (94%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Duck Egg Blue (#C3FBF4) |
| Black text | 17.78:1 |
| White text | 1.18:1 |
Values
| HEX | #CDF4EF |
| RGB | rgb(205, 244, 239) |
| HSL | hsl(172, 64%, 88%) |
| OKLCH | oklch(93.8% 0.041 187) |
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 #CDF4EF | 1.18:1 | Fails | Lc -10.2 | Not readable |
| Black text on #CDF4EF | 17.78:1 | AAA | Lc 94.8 | Preferred for body text |
| #CDF4EF text on white | 1.18:1 | Fails | Lc 8.7 | Not readable |
| #CDF4EF text on black | 17.78:1 | AAA | Lc -95.5 | 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
#F0F7F6
oklch(97.1% 0.008 186.9)
-
Step 100
100 (this color)
#CDF4EF
oklch(93.8% 0.041 187)
-
Step 200
200
#C5E0DC
oklch(88.6% 0.029 185.9)
-
Step 300
300
#9ACCC6
oklch(80.8% 0.053 187)
-
Step 400
400
#5DB2A9
oklch(70.8% 0.084 186.5)
-
Step 500
500
#129E94
oklch(63.1% 0.107 186.8)
-
Step 600
600
#00857D
oklch(55.5% 0.097 187.4)
-
Step 700
700
#007069
oklch(49.1% 0.086 187.3)
-
Step 800
800
#005C56
oklch(42.8% 0.075 187.1)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#042D2A
oklch(26.9% 0.044 187.6)
#CDF4EF 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) | #F0EFEF | 0.044 |
| Deuteranopia (no green cones) | #E8EAF0 | 0.041 |
| Tritanopia (no blue cones) | #C3F6F2 | 0.012 |
| Achromatopsia (no color) | #ECECEC | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CDF4EF
#CDF4EF
oklch(93.8% 0.041 187)
- #FFE2E7
#FFE2E7
oklch(93.8% 0.033 6)
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 #CDF4EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Duck Egg Blue #C3FBF4 ΔE 0.019
- Pale Sky Blue #BDF6FE ΔE 0.024
- Eggshell Blue #C4FFF7 ΔE 0.028
- Light Light Blue #CAFFFB ΔE 0.028
- Pale Blue #D0FEFE ΔE 0.029
- Ice #D6FFFA ΔE 0.032
- Diamond #B9F2FF ΔE 0.032
- Really Light Blue #D4FFFF ΔE 0.033
Use #CDF4EF 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.