#CDEFFF
Closest named color: Diamond (#B9F2FF). oklch(93.3% 0.042 227.9), rgb(205, 239, 255).
Aa
Black text reads best on this color (17.38:1).
About this color
#CDEFFF is a very light, muted teal or cyan. In OKLCH its lightness is 93%, its chroma 0.042 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Diamond (#B9F2FF), ΔE 0.023 away. Black text reads best on it, at 17.38:1.
| Hue family | Teals and cyans |
| Lightness | very light (93%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 17.38:1 |
| White text | 1.20:1 |
Values
| HEX | #CDEFFF |
| RGB | rgb(205, 239, 255) |
| HSL | hsl(199, 100%, 90%) |
| OKLCH | oklch(93.3% 0.042 227.9) |
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 #CDEFFF | 1.20:1 | Fails | Lc -11.9 | Not readable |
| Black text on #CDEFFF | 17.38:1 | AAA | Lc 93.4 | Preferred for body text |
| #CDEFFF text on white | 1.20:1 | Fails | Lc 10.2 | Not readable |
| #CDEFFF text on black | 17.38:1 | AAA | Lc -93.9 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100 (this color)
#CDEFFF
oklch(93.3% 0.042 227.9)
-
Step 200
200
#C6DEE9
oklch(88.6% 0.03 227)
-
Step 300
300
#9DC8DC
oklch(80.9% 0.053 228)
-
Step 400
400
#63ABCB
oklch(70.6% 0.086 228.6)
-
Step 500
500
#2C96BD
oklch(63.1% 0.109 227.6)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#05485F
oklch(37.6% 0.071 228.4)
-
Step 950
950
#082B38
oklch(27.1% 0.045 227.2)
#CDEFFF 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) | #E7EDFF | 0.032 |
| Deuteranopia (no green cones) | #DFE7FF | 0.029 |
| Tritanopia (no blue cones) | #BFF4F4 | 0.029 |
| Achromatopsia (no color) | #EAEAEA | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CDEFFF
#CDEFFF
oklch(93.3% 0.042 227.9)
- #FFE2D4
#FFE2D4
oklch(93.3% 0.037 47.4)
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 #CDEFFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Diamond #B9F2FF ΔE 0.023
- Pale Sky Blue #BDF6FE ΔE 0.025
- Lavender #E6E6FA ΔE 0.036
- Pale Blue #D0FEFE ΔE 0.041
- Duck Egg Blue #C3FBF4 ΔE 0.041
- Anti-Flash White #EDF2F4 ΔE 0.044
- Pale Turquoise #AFEEEE ΔE 0.044
- Really Light Blue #D4FFFF ΔE 0.044
Use #CDEFFF 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.