#91B5DF
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.2% 0.072 252.6), rgb(145, 181, 223).
Aa
Black text reads best on this color (9.87:1).
About this color
#91B5DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.072 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.032 away. Black text reads best on it, at 9.87:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.87:1 |
| White text | 2.12:1 |
Values
| HEX | #91B5DF |
| RGB | rgb(145, 181, 223) |
| HSL | hsl(212, 55%, 72%) |
| OKLCH | oklch(76.2% 0.072 252.6) |
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 #91B5DF | 2.12:1 | Fails | Lc -46.3 | Large or bold text, headings |
| Black text on #91B5DF | 9.87:1 | AAA | Lc 62.3 | Content text, not long reading |
| #91B5DF text on white | 2.12:1 | Fails | Lc 41.6 | Non-text elements, placeholder text |
| #91B5DF text on black | 9.87:1 | AAA | Lc -60.6 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C7DBF4
oklch(88.4% 0.041 254)
-
Step 300
300 (this color)
#91B5DF
oklch(76.2% 0.072 252.6)
-
Step 400
400
#6AA4E7
oklch(70.7% 0.116 252.9)
-
Step 500
500
#3E8CE0
oklch(63.2% 0.148 252.7)
-
Step 600
600
#1474CD
oklch(55.6% 0.16 252.5)
-
Step 700
700
#0161B2
oklch(49.2% 0.149 252.6)
-
Step 800
800
#0A4F90
oklch(42.6% 0.124 252.9)
-
Step 900
900
#144373
oklch(37.8% 0.096 252.3)
-
Step 950
950
#0E2743
oklch(26.9% 0.061 253.2)
#91B5DF 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) | #A5B6E1 | 0.026 |
| Deuteranopia (no green cones) | #9CAEDE | 0.022 |
| Tritanopia (no blue cones) | #78BEC3 | 0.062 |
| Achromatopsia (no color) | #B2B2B2 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B5DF
#91B5DF
oklch(76.2% 0.072 252.6)
- #CEAB7F
#CEAB7F
oklch(76.2% 0.072 72.8)
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 #91B5DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.032
- Light Cornflower Blue #98C1D9 ΔE 0.038
- Carolina Blue #8AB8FE ΔE 0.044
- Pastel Blue #A2BFFE ΔE 0.053
- Lightblue #7BC8F6 ΔE 0.054
- Cloudy Blue #ACC2D9 ΔE 0.054
- French Gray #ADB5BD ΔE 0.058
- Sky #82CAFC ΔE 0.060
Use #91B5DF 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.