#91C4FB
Closest named color: Sky (#82CAFC). oklch(80.5% 0.095 250.9), rgb(145, 196, 251).
Aa
Black text reads best on this color (11.49:1).
About this color
#91C4FB is a light, moderately saturated blue. In OKLCH its lightness is 80%, its chroma 0.095 and its hue 251°. 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 11.49:1.
| Hue family | Blues |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Sky (#82CAFC) |
| Black text | 11.49:1 |
| White text | 1.82:1 |
Values
| HEX | #91C4FB |
| RGB | rgb(145, 196, 251) |
| HSL | hsl(211, 93%, 78%) |
| OKLCH | oklch(80.5% 0.095 250.9) |
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 #91C4FB | 1.82:1 | Fails | Lc -38.2 | Non-text elements, placeholder text |
| Black text on #91C4FB | 11.49:1 | AAA | Lc 69.8 | Content text, not long reading |
| #91C4FB text on white | 1.82:1 | Fails | Lc 34.1 | Non-text elements, placeholder text |
| #91C4FB text on black | 11.49:1 | AAA | Lc -68.5 | 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
#EFF6FE
oklch(97% 0.013 251.6)
-
Step 100
100
#DDECFC
oklch(93.7% 0.027 249.9)
-
Step 200
200
#C0DCFC
oklch(88.4% 0.053 251.9)
-
Step 300
300 (this color)
#91C4FB
oklch(80.5% 0.095 250.9)
-
Step 400
400
#4EA5FB
oklch(70.7% 0.152 250.6)
-
Step 500
500
#008BF3
oklch(63.1% 0.184 251.1)
-
Step 600
600
#0075CD
oklch(55.6% 0.161 250.9)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#00508F
oklch(42.6% 0.123 250.8)
-
Step 900
900
#004379
oklch(37.8% 0.109 250.7)
-
Step 950
950
#00274B
oklch(27% 0.079 251.1)
#91C4FB 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) | #AFC6FE | 0.037 |
| Deuteranopia (no green cones) | #A2BBFA | 0.029 |
| Tritanopia (no blue cones) | #69D0D7 | 0.080 |
| Achromatopsia (no color) | #C0C0C0 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91C4FB
#91C4FB
oklch(80.5% 0.095 250.9)
- #E6B57A
#E6B57A
oklch(80.4% 0.095 71)
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 #91C4FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sky #82CAFC ΔE 0.020
- Pastel Blue #A2BFFE ΔE 0.024
- Lightblue #7BC8F6 ΔE 0.026
- Light Sky Blue #87CEFA ΔE 0.028
- Carolina Blue #8AB8FE ΔE 0.036
- Baby Blue #A2CFFE ΔE 0.037
- Sky Blue #87CEEB ΔE 0.042
- Light Cornflower Blue #98C1D9 ΔE 0.048
Use #91C4FB 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.