#91B2CB
Closest named color: Light Grey Blue (#9DBCD4). oklch(74.8% 0.051 241), rgb(145, 178, 203).
Aa
Black text reads best on this color (9.43:1).
About this color
#91B2CB is a medium-light, muted blue. In OKLCH its lightness is 75%, its chroma 0.051 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.033 away. Black text reads best on it, at 9.43:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.43:1 |
| White text | 2.22:1 |
Values
| HEX | #91B2CB |
| RGB | rgb(145, 178, 203) |
| HSL | hsl(206, 36%, 68%) |
| OKLCH | oklch(74.8% 0.051 241) |
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 #91B2CB | 2.22:1 | Fails | Lc -48.6 | Large or bold text, headings |
| Black text on #91B2CB | 9.43:1 | AAA | Lc 60.1 | Content text, not long reading |
| #91B2CB text on white | 2.22:1 | Fails | Lc 43.8 | Non-text elements, placeholder text |
| #91B2CB text on black | 9.43:1 | AAA | Lc -58.3 | 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
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AFC4D4
oklch(81% 0.032 240.7)
-
Step 400
400 (this color)
#91B2CB
oklch(74.8% 0.051 241)
-
Step 500
500
#658FAE
oklch(63.1% 0.066 241.1)
-
Step 600
600
#4C7999
oklch(55.7% 0.07 240.6)
-
Step 700
700
#3D6583
oklch(49% 0.066 242.2)
-
Step 800
800
#32536A
oklch(42.7% 0.054 240.2)
-
Step 900
900
#2D4556
oklch(37.8% 0.042 240.1)
-
Step 950
950
#1A2832
oklch(26.9% 0.027 240.1)
#91B2CB 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) | #A8B1CC | 0.030 |
| Deuteranopia (no green cones) | #A0ABCB | 0.026 |
| Tritanopia (no blue cones) | #80B8BA | 0.040 |
| Achromatopsia (no color) | #AEAEAE | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B2CB
#91B2CB
oklch(74.8% 0.051 241)
- #C6A68D
#C6A68D
oklch(74.7% 0.051 59.9)
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 #91B2CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.033
- Cool Steel #97A7B3 ΔE 0.038
- French Gray #ADB5BD ΔE 0.043
- Light Cornflower Blue #98C1D9 ΔE 0.043
- Bluegrey #85A3B2 ΔE 0.052
- Dark Gray #A9A9A9 ΔE 0.053
- Cool Grey #95A3A6 ΔE 0.057
- Bluey Grey #89A0B0 ΔE 0.057
Use #91B2CB 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.