#91B5DC
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.1% 0.069 250.8), rgb(145, 181, 220).
Aa
Black text reads best on this color (9.84:1).
About this color
#91B5DC is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.069 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.030 away. Black text reads best on it, at 9.84:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.84:1 |
| White text | 2.13:1 |
Values
| HEX | #91B5DC |
| RGB | rgb(145, 181, 220) |
| HSL | hsl(211, 52%, 72%) |
| OKLCH | oklch(76.1% 0.069 250.8) |
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 #91B5DC | 2.13:1 | Fails | Lc -46.5 | Large or bold text, headings |
| Black text on #91B5DC | 9.84:1 | AAA | Lc 62.1 | Content text, not long reading |
| #91B5DC text on white | 2.13:1 | Fails | Lc 41.8 | Non-text elements, placeholder text |
| #91B5DC text on black | 9.84:1 | AAA | Lc -60.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300 (this color)
#91B5DC
oklch(76.1% 0.069 250.8)
-
Step 400
400
#6AA5E3
oklch(70.7% 0.11 250.8)
-
Step 500
500
#3E8DDB
oklch(63.1% 0.141 250.8)
-
Step 600
600
#1475C8
oklch(55.5% 0.153 250.9)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#0A508C
oklch(42.6% 0.118 251)
-
Step 900
900
#144370
oklch(37.6% 0.092 251)
-
Step 950
950
#0E2842
oklch(27.1% 0.058 250.8)
#91B5DC 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) | #A6B6DE | 0.027 |
| Deuteranopia (no green cones) | #9DAEDB | 0.022 |
| Tritanopia (no blue cones) | #79BEC2 | 0.059 |
| Achromatopsia (no color) | #B1B1B1 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B5DC
#91B5DC
oklch(76.1% 0.069 250.8)
- #CDAA81
#CDAA81
oklch(75.9% 0.069 70.9)
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 #91B5DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.030
- Light Cornflower Blue #98C1D9 ΔE 0.036
- Carolina Blue #8AB8FE ΔE 0.048
- Cloudy Blue #ACC2D9 ΔE 0.052
- French Gray #ADB5BD ΔE 0.055
- Lightblue #7BC8F6 ΔE 0.055
- Pastel Blue #A2BFFE ΔE 0.057
- Light Steel Blue #B0C4DE ΔE 0.059
Use #91B5DC 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.