#CDDEFB
Closest named color: Lavender (#E6E6FA). oklch(89.7% 0.044 261.2), rgb(205, 222, 251).
Aa
Black text reads best on this color (15.43:1).
About this color
#CDDEFB is a light, muted blue. In OKLCH its lightness is 90%, its chroma 0.044 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Lavender (#E6E6FA), ΔE 0.041 away. Black text reads best on it, at 15.43:1.
| Hue family | Blues |
| Lightness | light (90%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Lavender (#E6E6FA) |
| Black text | 15.43:1 |
| White text | 1.36:1 |
Values
| HEX | #CDDEFB |
| RGB | rgb(205, 222, 251) |
| HSL | hsl(218, 85%, 89%) |
| OKLCH | oklch(89.7% 0.044 261.2) |
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 #CDDEFB | 1.36:1 | Fails | Lc -20.2 | Dividers and decoration only |
| Black text on #CDDEFB | 15.43:1 | AAA | Lc 86.0 | Fine for body text |
| #CDDEFB text on white | 1.36:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #CDDEFB text on black | 15.43:1 | AAA | Lc -85.9 | Fine 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 200.
-
Step 50
50
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200 (this color)
#CDDEFB
oklch(89.7% 0.044 261.2)
-
Step 300
300
#ACC2E6
oklch(81% 0.056 260.2)
-
Step 400
400
#81A1D9
oklch(70.7% 0.09 261.3)
-
Step 500
500
#6189CF
oklch(63.1% 0.115 261)
-
Step 600
600
#4872BC
oklch(55.7% 0.125 261)
-
Step 700
700
#395FA2
oklch(49.1% 0.116 260.9)
-
Step 800
800
#304E83
oklch(42.8% 0.095 261)
-
Step 900
900
#2A4169
oklch(37.7% 0.075 260.9)
-
Step 950
950
#19263E
oklch(27% 0.049 262)
#CDDEFB 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) | #D5DFFC | 0.011 |
| Deuteranopia (no green cones) | #D0DBFA | 0.008 |
| Tritanopia (no blue cones) | #C2E4E7 | 0.039 |
| Achromatopsia (no color) | #DDDDDD | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CDDEFB
#CDDEFB
oklch(89.7% 0.044 261.2)
- #ECDBBD
#ECDBBD
oklch(89.7% 0.044 81.9)
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 #CDDEFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lavender #E6E6FA ΔE 0.041
- Gainsboro #DCDCDC ΔE 0.044
- Cadet Gray #CED4DA ΔE 0.045
- Pale Silver #D8E2DC ΔE 0.049
- Powder Blue #B0E0E6 ΔE 0.049
- Platinum #E0E1DD ΔE 0.050
- Light Blue #ADD8E6 ΔE 0.053
- Light Gray #D3D3D3 ΔE 0.053
Use #CDDEFB 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.