#91BCFF
Closest named color: Carolina Blue (#8AB8FE). oklch(79% 0.107 259.1), rgb(145, 188, 255).
Aa
Black text reads best on this color (10.84:1).
About this color
#91BCFF is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.107 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.014 away. Black text reads best on it, at 10.84:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 10.84:1 |
| White text | 1.93:1 |
Values
| HEX | #91BCFF |
| RGB | rgb(145, 188, 255) |
| HSL | hsl(217, 100%, 78%) |
| OKLCH | oklch(79% 0.107 259.1) |
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 #91BCFF | 1.93:1 | Fails | Lc -41.4 | Non-text elements, placeholder text |
| Black text on #91BCFF | 10.84:1 | AAA | Lc 66.8 | Content text, not long reading |
| #91BCFF text on white | 1.93:1 | Fails | Lc 37.1 | Non-text elements, placeholder text |
| #91BCFF text on black | 10.84:1 | AAA | Lc -65.4 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFF
oklch(93.6% 0.031 258.9)
-
Step 200
200
#C3DBFF
oklch(88.5% 0.056 258.4)
-
Step 300
300 (this color)
#91BCFF
oklch(79% 0.107 259.1)
-
Step 400
400
#63A0FF
oklch(70.7% 0.154 259)
-
Step 500
500
#3384FF
oklch(63.1% 0.199 259)
-
Step 600
600
#0069EE
oklch(55.5% 0.216 259.1)
-
Step 700
700
#0058CA
oklch(49.1% 0.191 259.1)
-
Step 800
800
#0048A7
oklch(42.7% 0.165 259)
-
Step 900
900
#033C8B
oklch(37.7% 0.142 259)
-
Step 950
950
#062451
oklch(26.9% 0.09 258.8)
#91BCFF 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) | #A3C0FF | 0.025 |
| Deuteranopia (no green cones) | #97B5FE | 0.019 |
| Tritanopia (no blue cones) | #68CAD3 | 0.094 |
| Achromatopsia (no color) | #BABABA | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91BCFF
#91BCFF
oklch(79% 0.107 259.1)
- #DFB368
#DFB368
oklch(79.1% 0.106 79.6)
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 #91BCFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.014
- Pastel Blue #A2BFFE ΔE 0.023
- Sky #82CAFC ΔE 0.040
- Lightblue #7BC8F6 ΔE 0.043
- Light Sky Blue #87CEFA ΔE 0.051
- Baby Blue #A2CFFE ΔE 0.057
- Light Cornflower Blue #98C1D9 ΔE 0.061
- Light Grey Blue #9DBCD4 ΔE 0.063
Use #91BCFF 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.