#91BBF0
Closest named color: Carolina Blue (#8AB8FE). oklch(78.1% 0.089 254.5), rgb(145, 187, 240).
Aa
Black text reads best on this color (10.57:1).
About this color
#91BBF0 is a light, moderately saturated blue. In OKLCH its lightness is 78%, its chroma 0.089 and its hue 255°. 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 10.57:1.
| Hue family | Blues |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 10.57:1 |
| White text | 1.98:1 |
Values
| HEX | #91BBF0 |
| RGB | rgb(145, 187, 240) |
| HSL | hsl(213, 76%, 75%) |
| OKLCH | oklch(78.1% 0.089 254.5) |
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 #91BBF0 | 1.98:1 | Fails | Lc -42.8 | Non-text elements, placeholder text |
| Black text on #91BBF0 | 10.57:1 | AAA | Lc 65.6 | Content text, not long reading |
| #91BBF0 text on white | 1.98:1 | Fails | Lc 38.3 | Non-text elements, placeholder text |
| #91BBF0 text on black | 10.57:1 | AAA | Lc -64.0 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C4DBFA
oklch(88.4% 0.05 255.9)
-
Step 300
300 (this color)
#91BBF0
oklch(78.1% 0.089 254.5)
-
Step 400
400
#5FA3F7
oklch(70.7% 0.142 254.7)
-
Step 500
500
#2989F3
oklch(63.1% 0.181 254.5)
-
Step 600
600
#0071D9
oklch(55.6% 0.181 254.6)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#004D98
oklch(42.6% 0.139 254.8)
-
Step 900
900
#05417E
oklch(37.8% 0.118 254.4)
-
Step 950
950
#07264A
oklch(26.9% 0.076 254.9)
#91BBF0 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) | #A7BDF2 | 0.028 |
| Deuteranopia (no green cones) | #9CB4EF | 0.021 |
| Tritanopia (no blue cones) | #70C7CD | 0.078 |
| Achromatopsia (no color) | #B8B8B8 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91BBF0
#91BBF0
oklch(78.1% 0.089 254.5)
- #DAB077
#DAB077
oklch(78.2% 0.089 74.4)
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 #91BBF0, 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 0.031
- Lightblue #7BC8F6 ΔE 0.037
- Sky #82CAFC ΔE 0.040
- Light Cornflower Blue #98C1D9 ΔE 0.042
- Light Grey Blue #9DBCD4 ΔE 0.043
- Light Sky Blue #87CEFA ΔE 0.049
- Cloudy Blue #ACC2D9 ΔE 0.054
Use #91BBF0 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.