#91B1FF
Closest named color: Carolina Blue (#8AB8FE). oklch(76.7% 0.118 266.6), rgb(145, 177, 255).
Aa
Black text reads best on this color (9.93:1).
About this color
#91B1FF is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.118 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.020 away. Black text reads best on it, at 9.93:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.93:1 |
| White text | 2.11:1 |
Values
| HEX | #91B1FF |
| RGB | rgb(145, 177, 255) |
| HSL | hsl(223, 100%, 78%) |
| OKLCH | oklch(76.7% 0.118 266.6) |
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 #91B1FF | 2.11:1 | Fails | Lc -46.0 | Large or bold text, headings |
| Black text on #91B1FF | 9.93:1 | AAA | Lc 62.6 | Content text, not long reading |
| #91B1FF text on white | 2.11:1 | Fails | Lc 41.3 | Non-text elements, placeholder text |
| #91B1FF text on black | 9.93:1 | AAA | Lc -60.9 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300 (this color)
#91B1FF
oklch(76.7% 0.118 266.6)
-
Step 400
400
#759BFF
oklch(70.6% 0.153 266.8)
-
Step 500
500
#537EFF
oklch(63.1% 0.197 266.8)
-
Step 600
600
#335DFF
oklch(55.7% 0.244 266.6)
-
Step 700
700
#2446E8
oklch(49.2% 0.244 266.5)
-
Step 800
800
#1E3BBB
oklch(42.7% 0.202 266.6)
-
Step 900
900
#1C3593
oklch(37.6% 0.157 266.8)
-
Step 950
950
#102156
oklch(27.1% 0.099 266.3)
#91B1FF 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) | #95B8FF | 0.020 |
| Deuteranopia (no green cones) | #8AAEFD | 0.012 |
| Tritanopia (no blue cones) | #6AC1CD | 0.105 |
| Achromatopsia (no color) | #B2B2B2 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B1FF
#91B1FF
oklch(76.7% 0.118 266.6)
- #D4AE53
#D4AE53
oklch(76.7% 0.118 86.6)
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 #91B1FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.020
- Pastel Blue #A2BFFE ΔE 0.045
- Periwinkle Blue #8F99FB ΔE 0.062
- Lightblue #7BC8F6 ΔE 0.068
- Sky #82CAFC ΔE 0.068
- Light Grey Blue #9DBCD4 ΔE 0.078
- Light Sky Blue #87CEFA ΔE 0.080
- Light Cornflower Blue #98C1D9 ΔE 0.080
Use #91B1FF 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.