#91CFFF
Closest named color: Light Sky Blue (#87CEFA). oklch(83% 0.093 242.5), rgb(145, 207, 255).
Aa
Black text reads best on this color (12.57:1).
About this color
#91CFFF is a light, moderately saturated blue. In OKLCH its lightness is 83%, its chroma 0.093 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sky Blue (#87CEFA), ΔE 0.013 away. Black text reads best on it, at 12.57:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Light Sky Blue (#87CEFA) |
| Black text | 12.57:1 |
| White text | 1.67:1 |
Values
| HEX | #91CFFF |
| RGB | rgb(145, 207, 255) |
| HSL | hsl(206, 100%, 78%) |
| OKLCH | oklch(83% 0.093 242.5) |
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 #91CFFF | 1.67:1 | Fails | Lc -33.0 | Non-text elements, placeholder text |
| Black text on #91CFFF | 12.57:1 | AAA | Lc 74.5 | Content text, not long reading |
| #91CFFF text on white | 1.67:1 | Fails | Lc 29.3 | Dividers and decoration only |
| #91CFFF text on black | 12.57:1 | AAA | Lc -73.5 | 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
#DBEDFB
oklch(93.7% 0.027 241.2)
-
Step 200
200
#BCDEF9
oklch(88.5% 0.052 242.2)
-
Step 300
300 (this color)
#91CFFF
oklch(83% 0.093 242.5)
-
Step 400
400
#37A9F5
oklch(70.6% 0.149 242.9)
-
Step 500
500
#0091DC
oklch(63% 0.151 242.6)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00669D
oklch(49% 0.118 242.7)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#002943
oklch(27% 0.065 242.6)
#91CFFF 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) | #BBCFFF | 0.049 |
| Deuteranopia (no green cones) | #ACC3FE | 0.041 |
| Tritanopia (no blue cones) | #65DBDF | 0.076 |
| Achromatopsia (no color) | #C8C8C8 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91CFFF
#91CFFF
oklch(83% 0.093 242.5)
- #F3BA88
#F3BA88
oklch(82.9% 0.093 62.3)
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 #91CFFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sky Blue #87CEFA ΔE 0.013
- Baby Blue #A2CFFE ΔE 0.018
- Sky #82CAFC ΔE 0.022
- Sky Blue #87CEEB ΔE 0.031
- Lightblue #7BC8F6 ΔE 0.033
- Pastel Blue #A2BFFE ΔE 0.044
- Light Steel Blue #B0C4DE ΔE 0.054
- Light Blue Grey #B7C9E2 ΔE 0.055
Use #91CFFF 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.