#91B8FB
Closest named color: Carolina Blue (#8AB8FE). oklch(78% 0.105 260.9), rgb(145, 184, 251).
Aa
Black text reads best on this color (10.45:1).
About this color
#91B8FB is a medium-light, moderately saturated blue. In OKLCH its lightness is 78%, its chroma 0.105 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.009 away. Black text reads best on it, at 10.45:1.
| Hue family | Blues |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 10.45:1 |
| White text | 2.00:1 |
Values
| HEX | #91B8FB |
| RGB | rgb(145, 184, 251) |
| HSL | hsl(218, 93%, 78%) |
| OKLCH | oklch(78% 0.105 260.9) |
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 #91B8FB | 2.00:1 | Fails | Lc -43.3 | Non-text elements, placeholder text |
| Black text on #91B8FB | 10.45:1 | AAA | Lc 65.0 | Content text, not long reading |
| #91B8FB text on white | 2.00:1 | Fails | Lc 38.9 | Non-text elements, placeholder text |
| #91B8FB text on black | 10.45:1 | AAA | Lc -63.5 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFF
oklch(93.7% 0.03 260.7)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300 (this color)
#91B8FB
oklch(78% 0.105 260.9)
-
Step 400
400
#689FFF
oklch(70.7% 0.153 260.8)
-
Step 500
500
#3D83FF
oklch(63.2% 0.198 260.8)
-
Step 600
600
#0765F9
oklch(55.7% 0.234 260.9)
-
Step 700
700
#0053D5
oklch(49% 0.211 261)
-
Step 800
800
#0344AF
oklch(42.6% 0.181 261)
-
Step 900
900
#0E3B8A
oklch(37.6% 0.14 261)
-
Step 950
950
#0A2451
oklch(27.1% 0.089 260.6)
#91B8FB 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) | #A0BCFE | 0.022 |
| Deuteranopia (no green cones) | #94B2FA | 0.016 |
| Tritanopia (no blue cones) | #6BC6CF | 0.094 |
| Achromatopsia (no color) | #B7B7B7 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B8FB
#91B8FB
oklch(78% 0.105 260.9)
- #DAB065
#DAB065
oklch(77.9% 0.106 80.7)
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 #91B8FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.009
- Pastel Blue #A2BFFE ΔE 0.029
- Sky #82CAFC ΔE 0.048
- Lightblue #7BC8F6 ΔE 0.049
- Light Sky Blue #87CEFA ΔE 0.059
- Light Cornflower Blue #98C1D9 ΔE 0.062
- Light Grey Blue #9DBCD4 ΔE 0.062
- Baby Blue #A2CFFE ΔE 0.066
Use #91B8FB 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.