#91B4DA
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.8% 0.067 250.8), rgb(145, 180, 218).
Aa
Black text reads best on this color (9.74:1).
About this color
#91B4DA is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.067 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.031 away. Black text reads best on it, at 9.74:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.74:1 |
| White text | 2.15:1 |
Values
| HEX | #91B4DA |
| RGB | rgb(145, 180, 218) |
| HSL | hsl(211, 50%, 71%) |
| OKLCH | oklch(75.8% 0.067 250.8) |
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 #91B4DA | 2.15:1 | Fails | Lc -47.0 | Large or bold text, headings |
| Black text on #91B4DA | 9.74:1 | AAA | Lc 61.6 | Content text, not long reading |
| #91B4DA text on white | 2.15:1 | Fails | Lc 42.3 | Non-text elements, placeholder text |
| #91B4DA text on black | 9.74:1 | AAA | Lc -59.9 | Large or bold text, headings |
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 400.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC3DB
oklch(80.8% 0.042 250.6)
-
Step 400
400 (this color)
#91B4DA
oklch(75.8% 0.067 250.8)
-
Step 500
500
#618DBC
oklch(63.1% 0.086 250.9)
-
Step 600
600
#4777A8
oklch(55.7% 0.093 250.3)
-
Step 700
700
#396490
oklch(49.2% 0.086 250.5)
-
Step 800
800
#2F5175
oklch(42.6% 0.072 251.1)
-
Step 900
900
#2A445E
oklch(37.8% 0.055 249.5)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#91B4DA 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) | #A6B5DC | 0.027 |
| Deuteranopia (no green cones) | #9DADD9 | 0.022 |
| Tritanopia (no blue cones) | #7ABDC0 | 0.059 |
| Achromatopsia (no color) | #B1B1B1 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B4DA
#91B4DA
oklch(75.8% 0.067 250.8)
- #CCAA82
#CCAA82
oklch(75.9% 0.067 71.1)
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 #91B4DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.031
- Light Cornflower Blue #98C1D9 ΔE 0.038
- Carolina Blue #8AB8FE ΔE 0.051
- French Gray #ADB5BD ΔE 0.054
- Cloudy Blue #ACC2D9 ΔE 0.054
- Cool Steel #97A7B3 ΔE 0.057
- Lightblue #7BC8F6 ΔE 0.058
- Pastel Blue #A2BFFE ΔE 0.060
Use #91B4DA 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.