#91B1EF
Closest named color: Carolina Blue (#8AB8FE). oklch(76% 0.096 263.2), rgb(145, 177, 239).
Aa
Black text reads best on this color (9.73:1).
About this color
#91B1EF is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.096 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.025 away. Black text reads best on it, at 9.73:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.73:1 |
| White text | 2.15:1 |
Values
| HEX | #91B1EF |
| RGB | rgb(145, 177, 239) |
| HSL | hsl(220, 75%, 75%) |
| OKLCH | oklch(76% 0.096 263.2) |
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 #91B1EF | 2.15:1 | Fails | Lc -47.0 | Large or bold text, headings |
| Black text on #91B1EF | 9.73:1 | AAA | Lc 61.6 | Content text, not long reading |
| #91B1EF text on white | 2.15:1 | Fails | Lc 42.3 | Non-text elements, placeholder text |
| #91B1EF text on black | 9.73:1 | AAA | Lc -59.9 | Large or bold text, headings |
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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFE
oklch(88.6% 0.054 263.2)
-
Step 300
300 (this color)
#91B1EF
oklch(76% 0.096 263.2)
-
Step 400
400
#6D9DFF
oklch(70.6% 0.153 263.3)
-
Step 500
500
#4781FF
oklch(63.2% 0.197 263.3)
-
Step 600
600
#2A66EE
oklch(55.6% 0.214 263.2)
-
Step 700
700
#1E54CF
oklch(49.2% 0.199 263.1)
-
Step 800
800
#1A45A7
oklch(42.6% 0.165 263.2)
-
Step 900
900
#1B3C85
oklch(37.8% 0.129 263.3)
-
Step 950
950
#10244E
oklch(27.1% 0.082 263)
#91B1EF 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) | #9BB5F2 | 0.017 |
| Deuteranopia (no green cones) | #92ADEE | 0.010 |
| Tritanopia (no blue cones) | #72BEC6 | 0.087 |
| Achromatopsia (no color) | #B1B1B1 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B1EF
#91B1EF
oklch(76% 0.096 263.2)
- #CFAC67
#CFAC67
oklch(76.1% 0.097 83.3)
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 #91B1EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.025
- Pastel Blue #A2BFFE ΔE 0.046
- Light Grey Blue #9DBCD4 ΔE 0.058
- Lightblue #7BC8F6 ΔE 0.061
- Light Cornflower Blue #98C1D9 ΔE 0.062
- Sky #82CAFC ΔE 0.064
- Periwinkle Blue #8F99FB ΔE 0.070
- Cloudy Blue #ACC2D9 ΔE 0.073
Use #91B1EF 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.