#91B8EE
Closest named color: Carolina Blue (#8AB8FE). oklch(77.4% 0.089 256.6), rgb(145, 184, 238).
Aa
Black text reads best on this color (10.29:1).
About this color
#91B8EE is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.089 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.024 away. Black text reads best on it, at 10.29:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 10.29:1 |
| White text | 2.03:1 |
Values
| HEX | #91B8EE |
| RGB | rgb(145, 184, 238) |
| HSL | hsl(215, 73%, 75%) |
| OKLCH | oklch(77.4% 0.089 256.6) |
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 #91B8EE | 2.03:1 | Fails | Lc -44.2 | Non-text elements, placeholder text |
| Black text on #91B8EE | 10.29:1 | AAA | Lc 64.3 | Content text, not long reading |
| #91B8EE text on white | 2.03:1 | Fails | Lc 39.6 | Non-text elements, placeholder text |
| #91B8EE text on black | 10.29:1 | AAA | Lc -62.7 | 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
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300 (this color)
#91B8EE
oklch(77.4% 0.089 256.6)
-
Step 400
400
#63A2F7
oklch(70.7% 0.141 256.3)
-
Step 500
500
#3487F4
oklch(63% 0.182 256.8)
-
Step 600
600
#006EE1
oklch(55.5% 0.194 256.7)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800
#004B9E
oklch(42.6% 0.15 256.7)
-
Step 900
900
#0D407E
oklch(37.7% 0.117 256.3)
-
Step 950
950
#0A264A
oklch(27% 0.075 256.3)
#91B8EE 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) | #A4BBF0 | 0.026 |
| Deuteranopia (no green cones) | #9AB1ED | 0.020 |
| Tritanopia (no blue cones) | #71C4CA | 0.079 |
| Achromatopsia (no color) | #B5B5B5 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B8EE
#91B8EE
oklch(77.4% 0.089 256.6)
- #D6AE74
#D6AE74
oklch(77.4% 0.088 76.1)
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 #91B8EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.024
- Pastel Blue #A2BFFE ΔE 0.035
- Lightblue #7BC8F6 ΔE 0.044
- Light Grey Blue #9DBCD4 ΔE 0.044
- Light Cornflower Blue #98C1D9 ΔE 0.046
- Sky #82CAFC ΔE 0.047
- Light Sky Blue #87CEFA ΔE 0.056
- Cloudy Blue #ACC2D9 ΔE 0.057
Use #91B8EE 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.