#91B5ED
Closest named color: Carolina Blue (#8AB8FE). oklch(76.8% 0.09 259.1), rgb(145, 181, 237).
Aa
Black text reads best on this color (10.03:1).
About this color
#91B5ED is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.090 and its hue 259°. 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 10.03:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 10.03:1 |
| White text | 2.09:1 |
Values
| HEX | #91B5ED |
| RGB | rgb(145, 181, 237) |
| HSL | hsl(217, 72%, 75%) |
| OKLCH | oklch(76.8% 0.09 259.1) |
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 #91B5ED | 2.09:1 | Fails | Lc -45.5 | Large or bold text, headings |
| Black text on #91B5ED | 10.03:1 | AAA | Lc 63.1 | Content text, not long reading |
| #91B5ED text on white | 2.09:1 | Fails | Lc 40.9 | Non-text elements, placeholder text |
| #91B5ED text on black | 10.03:1 | AAA | Lc -61.4 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DBFB
oklch(88.6% 0.05 258.7)
-
Step 300
300 (this color)
#91B5ED
oklch(76.8% 0.09 259.1)
-
Step 400
400
#68A0F9
oklch(70.6% 0.144 259.3)
-
Step 500
500
#3D85F6
oklch(63% 0.184 259.2)
-
Step 600
600
#176CE5
oklch(55.6% 0.199 259)
-
Step 700
700
#0759C7
oklch(49.1% 0.186 259.1)
-
Step 800
800
#0C49A1
oklch(42.6% 0.155 259.2)
-
Step 900
900
#143F80
oklch(37.8% 0.12 259)
-
Step 950
950
#0D254B
oklch(27% 0.077 259.3)
#91B5ED 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) | #A1B8F0 | 0.022 |
| Deuteranopia (no green cones) | #97AFEC | 0.016 |
| Tritanopia (no blue cones) | #72C1C8 | 0.080 |
| Achromatopsia (no color) | #B3B3B3 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B5ED
#91B5ED
oklch(76.8% 0.09 259.1)
- #D2AD70
#D2AD70
oklch(76.7% 0.09 79.3)
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 #91B5ED, 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 0.040
- Light Grey Blue #9DBCD4 ΔE 0.048
- Lightblue #7BC8F6 ΔE 0.051
- Light Cornflower Blue #98C1D9 ΔE 0.051
- Sky #82CAFC ΔE 0.054
- Cloudy Blue #ACC2D9 ΔE 0.063
- Light Sky Blue #87CEFA ΔE 0.064
Use #91B5ED 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.