#91B8DB
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.7% 0.066 245.9), rgb(145, 184, 219).
Aa
Black text reads best on this color (10.08:1).
About this color
#91B8DB is a medium-light, muted blue. In OKLCH its lightness is 77%, its chroma 0.066 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.023 away. Black text reads best on it, at 10.08:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.08:1 |
| White text | 2.08:1 |
Values
| HEX | #91B8DB |
| RGB | rgb(145, 184, 219) |
| HSL | hsl(208, 51%, 71%) |
| OKLCH | oklch(76.7% 0.066 245.9) |
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 #91B8DB | 2.08:1 | Fails | Lc -45.3 | Large or bold text, headings |
| Black text on #91B8DB | 10.08:1 | AAA | Lc 63.3 | Content text, not long reading |
| #91B8DB text on white | 2.08:1 | Fails | Lc 40.7 | Non-text elements, placeholder text |
| #91B8DB text on black | 10.08:1 | AAA | Lc -61.6 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C6DCF0
oklch(88.4% 0.036 245.7)
-
Step 300
300 (this color)
#91B8DB
oklch(76.7% 0.066 245.9)
-
Step 400
400
#66A7DE
oklch(70.7% 0.105 245.6)
-
Step 500
500
#3690D5
oklch(63.2% 0.134 245.6)
-
Step 600
600
#0078C1
oklch(55.5% 0.143 246.2)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
Step 800
800
#005387
oklch(42.8% 0.11 245.8)
-
Step 900
900
#0E456D
oklch(37.8% 0.087 245.8)
-
Step 950
950
#0B2940
oklch(27.2% 0.055 245.2)
#91B8DB 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) | #AAB8DD | 0.032 |
| Deuteranopia (no green cones) | #A1B0DA | 0.027 |
| Tritanopia (no blue cones) | #79C0C3 | 0.055 |
| Achromatopsia (no color) | #B4B4B4 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B8DB
#91B8DB
oklch(76.7% 0.066 245.9)
- #D1AB87
#D1AB87
oklch(76.6% 0.066 65)
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 #91B8DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.023
- Light Cornflower Blue #98C1D9 ΔE 0.028
- Cloudy Blue #ACC2D9 ΔE 0.046
- Lightblue #7BC8F6 ΔE 0.050
- French Gray #ADB5BD ΔE 0.051
- Carolina Blue #8AB8FE ΔE 0.051
- Light Steel Blue #B0C4DE ΔE 0.053
- Pastel Blue #A2BFFE ΔE 0.056
Use #91B8DB 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.