#91C4F9
Closest named color: Sky (#82CAFC). oklch(80.4% 0.093 250), rgb(145, 196, 249).
Aa
Black text reads best on this color (11.46:1).
About this color
#91C4F9 is a light, moderately saturated blue. In OKLCH its lightness is 80%, its chroma 0.093 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Sky (#82CAFC), ΔE 0.020 away. Black text reads best on it, at 11.46:1.
| Hue family | Blues |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Sky (#82CAFC) |
| Black text | 11.46:1 |
| White text | 1.83:1 |
Values
| HEX | #91C4F9 |
| RGB | rgb(145, 196, 249) |
| HSL | hsl(211, 90%, 77%) |
| OKLCH | oklch(80.4% 0.093 250) |
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 #91C4F9 | 1.83:1 | Fails | Lc -38.3 | Non-text elements, placeholder text |
| Black text on #91C4F9 | 11.46:1 | AAA | Lc 69.7 | Content text, not long reading |
| #91C4F9 text on white | 1.83:1 | Fails | Lc 34.2 | Non-text elements, placeholder text |
| #91C4F9 text on black | 11.46:1 | AAA | Lc -68.4 | 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
#EFF6FE
oklch(97% 0.013 251.6)
-
Step 100
100
#DDECFC
oklch(93.7% 0.027 249.9)
-
Step 200
200
#C0DDFB
oklch(88.6% 0.052 249.3)
-
Step 300
300 (this color)
#91C4F9
oklch(80.4% 0.093 250)
-
Step 400
400
#4FA5F9
oklch(70.7% 0.149 250.3)
-
Step 500
500
#008CF0
oklch(63.1% 0.179 250.1)
-
Step 600
600
#0076CA
oklch(55.7% 0.156 249.7)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518E
oklch(42.8% 0.121 249.9)
-
Step 900
900
#004377
oklch(37.7% 0.106 249.9)
-
Step 950
950
#00274A
oklch(26.9% 0.077 250.5)
#91C4F9 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) | #AFC5FB | 0.036 |
| Deuteranopia (no green cones) | #A2BBF8 | 0.029 |
| Tritanopia (no blue cones) | #6AD0D6 | 0.079 |
| Achromatopsia (no color) | #BFBFBF | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91C4F9
#91C4F9
oklch(80.4% 0.093 250)
- #E6B57C
#E6B57C
oklch(80.5% 0.093 70.1)
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 #91C4F9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sky #82CAFC ΔE 0.020
- Lightblue #7BC8F6 ΔE 0.025
- Pastel Blue #A2BFFE ΔE 0.025
- Light Sky Blue #87CEFA ΔE 0.027
- Carolina Blue #8AB8FE ΔE 0.037
- Baby Blue #A2CFFE ΔE 0.037
- Sky Blue #87CEEB ΔE 0.040
- Light Cornflower Blue #98C1D9 ΔE 0.045
Use #91C4F9 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.