#91B4FB
Closest named color: Carolina Blue (#8AB8FE). oklch(77.2% 0.109 263.9), rgb(145, 180, 251).
Aa
Black text reads best on this color (10.12:1).
About this color
#91B4FB is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.109 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.012 away. Black text reads best on it, at 10.12:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 10.12:1 |
| White text | 2.07:1 |
Values
| HEX | #91B4FB |
| RGB | rgb(145, 180, 251) |
| HSL | hsl(220, 93%, 78%) |
| OKLCH | oklch(77.2% 0.109 263.9) |
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 #91B4FB | 2.07:1 | Fails | Lc -45.0 | Large or bold text, headings |
| Black text on #91B4FB | 10.12:1 | AAA | Lc 63.5 | Content text, not long reading |
| #91B4FB text on white | 2.07:1 | Fails | Lc 40.4 | Non-text elements, placeholder text |
| #91B4FB text on black | 10.12:1 | AAA | Lc -61.9 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7DAFF
oklch(88.6% 0.055 263.7)
-
Step 300
300 (this color)
#91B4FB
oklch(77.2% 0.109 263.9)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4980FF
oklch(63% 0.198 264)
-
Step 600
600
#2260FE
oklch(55.6% 0.243 263.8)
-
Step 700
700
#174DDE
oklch(49.1% 0.227 263.9)
-
Step 800
800
#1541B3
oklch(42.7% 0.187 263.9)
-
Step 900
900
#17398D
oklch(37.7% 0.145 264)
-
Step 950
950
#0E2253
oklch(26.9% 0.093 264.3)
#91B4FB 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) | #9BB9FE | 0.019 |
| Deuteranopia (no green cones) | #90B0F9 | 0.011 |
| Tritanopia (no blue cones) | #6BC3CD | 0.098 |
| Achromatopsia (no color) | #B4B4B4 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B4FB
#91B4FB
oklch(77.2% 0.109 263.9)
- #D6AF5E
#D6AF5E
oklch(77.2% 0.11 84)
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 #91B4FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.012
- Pastel Blue #A2BFFE ΔE 0.037
- Lightblue #7BC8F6 ΔE 0.058
- Sky #82CAFC ΔE 0.059
- Light Grey Blue #9DBCD4 ΔE 0.068
- Light Cornflower Blue #98C1D9 ΔE 0.069
- Light Sky Blue #87CEFA ΔE 0.070
- Periwinkle Blue #8F99FB ΔE 0.071
Use #91B4FB 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.