#91B9DA
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.8% 0.064 243.6), rgb(145, 185, 218).
Aa
Black text reads best on this color (10.15:1).
About this color
#91B9DA is a medium-light, muted blue. In OKLCH its lightness is 77%, its chroma 0.064 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.020 away. Black text reads best on it, at 10.15:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.15:1 |
| White text | 2.06:1 |
Values
| HEX | #91B9DA |
| RGB | rgb(145, 185, 218) |
| HSL | hsl(207, 50%, 71%) |
| OKLCH | oklch(76.8% 0.064 243.6) |
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 #91B9DA | 2.06:1 | Fails | Lc -44.9 | Non-text elements, placeholder text |
| Black text on #91B9DA | 10.15:1 | AAA | Lc 63.6 | Content text, not long reading |
| #91B9DA text on white | 2.06:1 | Fails | Lc 40.3 | Non-text elements, placeholder text |
| #91B9DA text on black | 10.15:1 | AAA | Lc -62.0 | 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
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C6DCEF
oklch(88.4% 0.035 244.2)
-
Step 300
300 (this color)
#91B9DA
oklch(76.8% 0.064 243.6)
-
Step 400
400
#65A8DC
oklch(70.8% 0.103 243.4)
-
Step 500
500
#3391D2
oklch(63.2% 0.13 243.3)
-
Step 600
600
#0079BC
oklch(55.5% 0.136 243.9)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005383
oklch(42.6% 0.105 243.8)
-
Step 900
900
#0B456B
oklch(37.6% 0.086 243.9)
-
Step 950
950
#0A293F
oklch(27.1% 0.054 243.5)
#91B9DA 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) | #ACB9DC | 0.034 |
| Deuteranopia (no green cones) | #A2B1D9 | 0.028 |
| Tritanopia (no blue cones) | #7AC1C4 | 0.052 |
| Achromatopsia (no color) | #B4B4B4 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B9DA
#91B9DA
oklch(76.8% 0.064 243.6)
- #D1AC8A
#D1AC8A
oklch(76.9% 0.063 64.2)
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 #91B9DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.020
- Light Cornflower Blue #98C1D9 ΔE 0.025
- Cloudy Blue #ACC2D9 ΔE 0.044
- Lightblue #7BC8F6 ΔE 0.049
- French Gray #ADB5BD ΔE 0.050
- Light Steel Blue #B0C4DE ΔE 0.051
- Carolina Blue #8AB8FE ΔE 0.054
- Sky Blue #87CEEB ΔE 0.055
Use #91B9DA 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.