#91B5CE
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.5% 0.053 238.7), rgb(145, 181, 206).
Aa
Black text reads best on this color (9.70:1).
About this color
#91B5CE is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.053 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.026 away. Black text reads best on it, at 9.70:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.70:1 |
| White text | 2.16:1 |
Values
| HEX | #91B5CE |
| RGB | rgb(145, 181, 206) |
| HSL | hsl(205, 38%, 69%) |
| OKLCH | oklch(75.5% 0.053 238.7) |
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 #91B5CE | 2.16:1 | Fails | Lc -47.2 | Large or bold text, headings |
| Black text on #91B5CE | 9.70:1 | AAA | Lc 61.4 | Content text, not long reading |
| #91B5CE text on white | 2.16:1 | Fails | Lc 42.5 | Non-text elements, placeholder text |
| #91B5CE text on black | 9.70:1 | AAA | Lc -59.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AEC4D4
oklch(80.9% 0.033 239.5)
-
Step 400
400 (this color)
#91B5CE
oklch(75.5% 0.053 238.7)
-
Step 500
500
#6290AE
oklch(63.2% 0.067 237.8)
-
Step 600
600
#48799A
oklch(55.5% 0.074 239.5)
-
Step 700
700
#396683
oklch(49.1% 0.068 238.5)
-
Step 800
800
#30536B
oklch(42.6% 0.057 239.9)
-
Step 900
900
#2B4557
oklch(37.7% 0.044 239.7)
-
Step 950
950
#192833
oklch(26.9% 0.029 241)
#91B5CE 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) | #AAB4CF | 0.032 |
| Deuteranopia (no green cones) | #A2ADCE | 0.029 |
| Tritanopia (no blue cones) | #7EBBBD | 0.041 |
| Achromatopsia (no color) | #B0B0B0 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B5CE
#91B5CE
oklch(75.5% 0.053 238.7)
- #CAA88F
#CAA88F
oklch(75.5% 0.053 58.2)
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 #91B5CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.026
- Light Cornflower Blue #98C1D9 ΔE 0.035
- French Gray #ADB5BD ΔE 0.041
- Cool Steel #97A7B3 ΔE 0.045
- Cloudy Blue #ACC2D9 ΔE 0.052
- Dark Gray #A9A9A9 ΔE 0.057
- Bluegrey #85A3B2 ΔE 0.059
- Light Steel Blue #B0C4DE ΔE 0.061
Use #91B5CE 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.