#91CDF9
Closest named color: Light Sky Blue (#87CEFA). oklch(82.3% 0.088 240.9), rgb(145, 205, 249).
Aa
Black text reads best on this color (12.30:1).
About this color
#91CDF9 is a light, moderately saturated blue. In OKLCH its lightness is 82%, its chroma 0.088 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sky Blue (#87CEFA), ΔE 0.010 away. Black text reads best on it, at 12.30:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Light Sky Blue (#87CEFA) |
| Black text | 12.30:1 |
| White text | 1.70:1 |
Values
| HEX | #91CDF9 |
| RGB | rgb(145, 205, 249) |
| HSL | hsl(205, 90%, 77%) |
| OKLCH | oklch(82.3% 0.088 240.9) |
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 #91CDF9 | 1.70:1 | Fails | Lc -34.3 | Non-text elements, placeholder text |
| Black text on #91CDF9 | 12.30:1 | AAA | Lc 73.3 | Content text, not long reading |
| #91CDF9 text on white | 1.70:1 | Fails | Lc 30.5 | Non-text elements, placeholder text |
| #91CDF9 text on black | 12.30:1 | AAA | Lc -72.3 | Content text, not long reading |
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 300.
-
Step 50
50
#EFF7FD
oklch(97.2% 0.012 239.9)
-
Step 100
100
#DCEDFA
oklch(93.7% 0.025 240.7)
-
Step 200
200
#BDDEF7
oklch(88.5% 0.049 240.8)
-
Step 300
300 (this color)
#91CDF9
oklch(82.3% 0.088 240.9)
-
Step 400
400
#3DAAEF
oklch(70.7% 0.14 241)
-
Step 500
500
#0092D9
oklch(63.1% 0.147 241)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900
#00466B
oklch(37.7% 0.087 240.8)
-
Step 950
950
#002942
oklch(26.9% 0.063 241.6)
#91CDF9 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) | #BACCFB | 0.048 |
| Deuteranopia (no green cones) | #ACC1F8 | 0.041 |
| Tritanopia (no blue cones) | #68D8DB | 0.071 |
| Achromatopsia (no color) | #C6C6C6 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91CDF9
#91CDF9
oklch(82.3% 0.088 240.9)
- #EFB88B
#EFB88B
oklch(82.2% 0.087 60.5)
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 #91CDF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sky Blue #87CEFA ΔE 0.010
- Sky #82CAFC ΔE 0.019
- Baby Blue #A2CFFE ΔE 0.022
- Sky Blue #87CEEB ΔE 0.025
- Lightblue #7BC8F6 ΔE 0.028
- Pastel Blue #A2BFFE ΔE 0.043
- Light Cornflower Blue #98C1D9 ΔE 0.047
- Light Steel Blue #B0C4DE ΔE 0.048
Use #91CDF9 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.