#91B4DF
Closest named color: Light Grey Blue (#9DBCD4). oklch(76% 0.073 253.9), rgb(145, 180, 223).
Aa
Black text reads best on this color (9.79:1).
About this color
#91B4DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.073 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.035 away. Black text reads best on it, at 9.79:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.79:1 |
| White text | 2.14:1 |
Values
| HEX | #91B4DF |
| RGB | rgb(145, 180, 223) |
| HSL | hsl(213, 55%, 72%) |
| OKLCH | oklch(76% 0.073 253.9) |
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 #91B4DF | 2.14:1 | Fails | Lc -46.7 | Large or bold text, headings |
| Black text on #91B4DF | 9.79:1 | AAA | Lc 61.9 | Content text, not long reading |
| #91B4DF text on white | 2.14:1 | Fails | Lc 42.0 | Non-text elements, placeholder text |
| #91B4DF text on black | 9.79:1 | AAA | Lc -60.2 | 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)
#91B4DF
oklch(76% 0.073 253.9)
-
Step 400
400
#6BA4E8
oklch(70.8% 0.117 253.6)
-
Step 500
500
#418BE1
oklch(63.1% 0.149 254)
-
Step 600
600
#1A73CF
oklch(55.6% 0.163 253.9)
-
Step 700
700
#0960B3
oklch(49.1% 0.151 253.9)
-
Step 800
800
#0F4F91
oklch(42.8% 0.125 253.8)
-
Step 900
900
#164273
oklch(37.7% 0.097 253.8)
-
Step 950
950
#0E2744
oklch(27% 0.062 253.9)
#91B4DF 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) | #A4B5E1 | 0.025 |
| Deuteranopia (no green cones) | #9BAEDE | 0.019 |
| Tritanopia (no blue cones) | #78BDC2 | 0.063 |
| Achromatopsia (no color) | #B1B1B1 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B4DF
#91B4DF
oklch(76% 0.073 253.9)
- #CDAA7D
#CDAA7D
oklch(75.9% 0.073 73.4)
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 #91B4DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.035
- Light Cornflower Blue #98C1D9 ΔE 0.041
- Carolina Blue #8AB8FE ΔE 0.044
- Pastel Blue #A2BFFE ΔE 0.054
- Lightblue #7BC8F6 ΔE 0.056
- Cloudy Blue #ACC2D9 ΔE 0.056
- French Gray #ADB5BD ΔE 0.059
- Sky #82CAFC ΔE 0.062
Use #91B4DF 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.