#91B8DF
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.8% 0.07 248.8), rgb(145, 184, 223).
Aa
Black text reads best on this color (10.12:1).
About this color
#91B8DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.070 and its hue 249°. 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 10.12:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.12:1 |
| White text | 2.07:1 |
Values
| HEX | #91B8DF |
| RGB | rgb(145, 184, 223) |
| HSL | hsl(210, 55%, 72%) |
| OKLCH | oklch(76.8% 0.07 248.8) |
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 #91B8DF | 2.07:1 | Fails | Lc -45.0 | Large or bold text, headings |
| Black text on #91B8DF | 10.12:1 | AAA | Lc 63.5 | Content text, not long reading |
| #91B8DF text on white | 2.07:1 | Fails | Lc 40.5 | Non-text elements, placeholder text |
| #91B8DF text on black | 10.12:1 | AAA | Lc -61.8 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF2
oklch(88.5% 0.038 248.3)
-
Step 300
300 (this color)
#91B8DF
oklch(76.8% 0.07 248.8)
-
Step 400
400
#66A6E3
oklch(70.7% 0.112 248.6)
-
Step 500
500
#358EDC
oklch(63.1% 0.144 248.8)
-
Step 600
600
#0077C7
oklch(55.7% 0.152 248.5)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#0D4471
oklch(37.8% 0.094 248.7)
-
Step 950
950
#0B2842
oklch(27% 0.059 248.9)
#91B8DF 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) | #A9B9E1 | 0.031 |
| Deuteranopia (no green cones) | #9FB0DE | 0.026 |
| Tritanopia (no blue cones) | #78C1C5 | 0.059 |
| Achromatopsia (no color) | #B4B4B4 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B8DF
#91B8DF
oklch(76.8% 0.07 248.8)
- #D2AC83
#D2AC83
oklch(76.9% 0.071 68.6)
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 #91B8DF, 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 0.030
- Carolina Blue #8AB8FE ΔE 0.046
- Cloudy Blue #ACC2D9 ΔE 0.047
- Lightblue #7BC8F6 ΔE 0.048
- Pastel Blue #A2BFFE ΔE 0.051
- Light Steel Blue #B0C4DE ΔE 0.053
- Sky #82CAFC ΔE 0.054
Use #91B8DF 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.