#CDE9FB
Closest named color: Diamond (#B9F2FF). oklch(91.9% 0.038 236.1), rgb(205, 233, 251).
Aa
Black text reads best on this color (16.64:1).
About this color
#CDE9FB is a very light, muted blue. In OKLCH its lightness is 92%, its chroma 0.038 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Diamond (#B9F2FF), ΔE 0.030 away. Black text reads best on it, at 16.64:1.
| Hue family | Blues |
| Lightness | very light (92%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 16.64:1 |
| White text | 1.26:1 |
Values
| HEX | #CDE9FB |
| RGB | rgb(205, 233, 251) |
| HSL | hsl(203, 85%, 89%) |
| OKLCH | oklch(91.9% 0.038 236.1) |
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 #CDE9FB | 1.26:1 | Fails | Lc -15.0 | Dividers and decoration only |
| Black text on #CDE9FB | 16.64:1 | AAA | Lc 90.6 | Preferred for body text |
| #CDE9FB text on white | 1.26:1 | Fails | Lc 13.0 | Not readable |
| #CDE9FB text on black | 16.64:1 | AAA | Lc -90.9 | 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)
#CDE9FB
oklch(91.9% 0.038 236.1)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A3C6DD
oklch(80.9% 0.05 237)
-
Step 400
400
#6FA9CC
oklch(70.8% 0.079 236)
-
Step 500
500
#4492BE
oklch(63% 0.101 236.2)
-
Step 600
600
#1D7CAB
oklch(55.6% 0.11 236.3)
-
Step 700
700
#0C6893
oklch(49% 0.103 236.8)
-
Step 800
800
#115577
oklch(42.6% 0.085 236.5)
-
Step 900
900
#184760
oklch(37.8% 0.066 235.7)
-
Step 950
950
#102938
oklch(26.9% 0.042 237.4)
#CDE9FB 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) | #E1E8FC | 0.025 |
| Deuteranopia (no green cones) | #DBE3FB | 0.022 |
| Tritanopia (no blue cones) | #C1EEEF | 0.029 |
| Achromatopsia (no color) | #E5E5E5 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CDE9FB
#CDE9FB
oklch(91.9% 0.038 236.1)
- #F9DECC
#F9DECC
oklch(91.8% 0.038 55.9)
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 #CDE9FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Diamond #B9F2FF ΔE 0.030
- Lavender #E6E6FA ΔE 0.032
- Pale Sky Blue #BDF6FE ΔE 0.036
- Pale Silver #D8E2DC ΔE 0.041
- Platinum #E0E1DD ΔE 0.043
- Pale Turquoise #AFEEEE ΔE 0.044
- Gainsboro #DCDCDC ΔE 0.046
- Anti-Flash White #EDF2F4 ΔE 0.051
Use #CDE9FB 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.