#CDEFFB
Closest named color: Diamond (#B9F2FF). oklch(93.1% 0.039 221.1), rgb(205, 239, 251).
Aa
Black text reads best on this color (17.33:1).
About this color
#CDEFFB is a very light, muted teal or cyan. In OKLCH its lightness is 93%, its chroma 0.039 and its hue 221°. 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 17.33:1.
| Hue family | Teals and cyans |
| Lightness | very light (93%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 17.33:1 |
| White text | 1.21:1 |
Values
| HEX | #CDEFFB |
| RGB | rgb(205, 239, 251) |
| HSL | hsl(196, 85%, 89%) |
| OKLCH | oklch(93.1% 0.039 221.1) |
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 #CDEFFB | 1.21:1 | Fails | Lc -12.1 | Not readable |
| Black text on #CDEFFB | 17.33:1 | AAA | Lc 93.2 | Preferred for body text |
| #CDEFFB text on white | 1.21:1 | Fails | Lc 10.4 | Not readable |
| #CDEFFB text on black | 17.33:1 | AAA | Lc -93.7 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100 (this color)
#CDEFFB
oklch(93.1% 0.039 221.1)
-
Step 200
200
#C6DEE6
oklch(88.5% 0.028 219.8)
-
Step 300
300
#9EC9D8
oklch(81% 0.05 221.2)
-
Step 400
400
#64ACC4
oklch(70.6% 0.08 221.6)
-
Step 500
500
#2D97B5
oklch(63.1% 0.103 221.2)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#05495A
oklch(37.6% 0.067 220.8)
-
Step 950
950
#092B35
oklch(27% 0.042 221.3)
#CDEFFB 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) | #E8EDFC | 0.034 |
| Deuteranopia (no green cones) | #E0E7FB | 0.030 |
| Tritanopia (no blue cones) | #C0F3F3 | 0.023 |
| Achromatopsia (no color) | #E9E9E9 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CDEFFB
#CDEFFB
oklch(93.1% 0.039 221.1)
- #FFE1D6
#FFE1D6
oklch(93.1% 0.036 41.2)
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 #CDEFFB, 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 0.023
- Lavender #E6E6FA ΔE 0.037
- Duck Egg Blue #C3FBF4 ΔE 0.037
- Pale Blue #D0FEFE ΔE 0.039
- Pale Turquoise #AFEEEE ΔE 0.041
- Light Light Blue #CAFFFB ΔE 0.042
- Anti-Flash White #EDF2F4 ΔE 0.042
Use #CDEFFB 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.