#91B8CC
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.1% 0.051 230.5), rgb(145, 184, 204).
Aa
Black text reads best on this color (9.93:1).
About this color
#91B8CC is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.051 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.022 away. Black text reads best on it, at 9.93:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.93:1 |
| White text | 2.11:1 |
Values
| HEX | #91B8CC |
| RGB | rgb(145, 184, 204) |
| HSL | hsl(200, 37%, 68%) |
| OKLCH | oklch(76.1% 0.051 230.5) |
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 #91B8CC | 2.11:1 | Fails | Lc -46.0 | Large or bold text, headings |
| Black text on #91B8CC | 9.93:1 | AAA | Lc 62.5 | Content text, not long reading |
| #91B8CC text on white | 2.11:1 | Fails | Lc 41.4 | Non-text elements, placeholder text |
| #91B8CC text on black | 9.93:1 | AAA | Lc -60.8 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300 (this color)
#91B8CC
oklch(76.1% 0.051 230.5)
-
Step 400
400
#69AACA
oklch(70.7% 0.081 230.8)
-
Step 500
500
#3994BC
oklch(63% 0.104 230.7)
-
Step 600
600
#007EA8
oklch(55.6% 0.112 230.6)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900
#10485F
oklch(37.8% 0.068 230.5)
-
Step 950
950
#0C2A37
oklch(26.9% 0.043 229.9)
#91B8CC 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) | #AEB6CD | 0.037 |
| Deuteranopia (no green cones) | #A6AFCC | 0.034 |
| Tritanopia (no blue cones) | #7FBEBE | 0.037 |
| Achromatopsia (no color) | #B2B2B2 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B8CC
#91B8CC
oklch(76.1% 0.051 230.5)
- #CDA995
#CDA995
oklch(76.2% 0.051 50.7)
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 #91B8CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.022
- Light Cornflower Blue #98C1D9 ΔE 0.029
- French Gray #ADB5BD ΔE 0.038
- Cloudy Blue #ACC2D9 ΔE 0.047
- Cool Steel #97A7B3 ΔE 0.049
- Light Steel Blue #B0C4DE ΔE 0.057
- Dark Gray #A9A9A9 ΔE 0.057
- Sky Blue #87CEEB ΔE 0.062
Use #91B8CC 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.