#91B7CB
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.9% 0.05 231.2), rgb(145, 183, 203).
Aa
Black text reads best on this color (9.83:1).
About this color
#91B7CB is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.050 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.024 away. Black text reads best on it, at 9.83:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.83:1 |
| White text | 2.13:1 |
Values
| HEX | #91B7CB |
| RGB | rgb(145, 183, 203) |
| HSL | hsl(201, 36%, 68%) |
| OKLCH | oklch(75.9% 0.05 231.2) |
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 #91B7CB | 2.13:1 | Fails | Lc -46.5 | Large or bold text, headings |
| Black text on #91B7CB | 9.83:1 | AAA | Lc 62.1 | Content text, not long reading |
| #91B7CB text on white | 2.13:1 | Fails | Lc 41.9 | Non-text elements, placeholder text |
| #91B7CB text on black | 9.83:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300 (this color)
#91B7CB
oklch(75.9% 0.05 231.2)
-
Step 400
400
#6BAACA
oklch(70.8% 0.08 231.6)
-
Step 500
500
#3C94BC
oklch(63.1% 0.102 231.3)
-
Step 600
600
#057EA8
oklch(55.6% 0.111 230.8)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#025775
oklch(42.8% 0.085 230.6)
-
Step 900
900
#12485E
oklch(37.8% 0.066 229.9)
-
Step 950
950
#0D2A37
oklch(27% 0.042 230.5)
#91B7CB 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) | #ADB5CC | 0.036 |
| Deuteranopia (no green cones) | #A5AFCB | 0.032 |
| Tritanopia (no blue cones) | #7FBDBD | 0.037 |
| Achromatopsia (no color) | #B1B1B1 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B7CB
#91B7CB
oklch(75.9% 0.05 231.2)
- #CBA894
#CBA894
oklch(75.8% 0.05 51.4)
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 #91B7CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.024
- Light Cornflower Blue #98C1D9 ΔE 0.032
- French Gray #ADB5BD ΔE 0.038
- Cool Steel #97A7B3 ΔE 0.046
- Cloudy Blue #ACC2D9 ΔE 0.049
- Dark Gray #A9A9A9 ΔE 0.055
- Light Steel Blue #B0C4DE ΔE 0.059
- Pewter #96A8A1 ΔE 0.061
Use #91B7CB 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.