#91B1DA
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.1% 0.069 254.8), rgb(145, 177, 218).
Aa
Black text reads best on this color (9.50:1).
About this color
#91B1DA is a medium-light, muted blue. In OKLCH its lightness is 75%, its chroma 0.069 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.038 away. Black text reads best on it, at 9.50:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.50:1 |
| White text | 2.20:1 |
Values
| HEX | #91B1DA |
| RGB | rgb(145, 177, 218) |
| HSL | hsl(214, 50%, 71%) |
| OKLCH | oklch(75.1% 0.069 254.8) |
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 #91B1DA | 2.20:1 | Fails | Lc -48.2 | Large or bold text, headings |
| Black text on #91B1DA | 9.50:1 | AAA | Lc 60.5 | Content text, not long reading |
| #91B1DA text on white | 2.20:1 | Fails | Lc 43.5 | Non-text elements, placeholder text |
| #91B1DA text on black | 9.50:1 | AAA | Lc -58.7 | 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
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AEC3DD
oklch(81% 0.043 253.8)
-
Step 400
400 (this color)
#91B1DA
oklch(75.1% 0.069 254.8)
-
Step 500
500
#648CBE
oklch(63.1% 0.088 254.5)
-
Step 600
600
#4B75AA
oklch(55.5% 0.095 254.9)
-
Step 700
700
#3C6292
oklch(49% 0.089 254.9)
-
Step 800
800
#325077
oklch(42.6% 0.075 255.5)
-
Step 900
900
#2C4360
oklch(37.8% 0.058 254.7)
-
Step 950
950
#1A2738
oklch(26.9% 0.037 255.4)
#91B1DA 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) | #A2B2DC | 0.022 |
| Deuteranopia (no green cones) | #9AABD9 | 0.018 |
| Tritanopia (no blue cones) | #7BBABF | 0.060 |
| Achromatopsia (no color) | #AEAEAE | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B1DA
#91B1DA
oklch(75.1% 0.069 254.8)
- #C9A97D
#C9A97D
oklch(75.3% 0.07 75.2)
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 #91B1DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.038
- Light Cornflower Blue #98C1D9 ΔE 0.046
- Carolina Blue #8AB8FE ΔE 0.051
- Cool Steel #97A7B3 ΔE 0.055
- French Gray #ADB5BD ΔE 0.058
- Cloudy Blue #ACC2D9 ΔE 0.061
- Pastel Blue #A2BFFE ΔE 0.063
- Lightblue #7BC8F6 ΔE 0.064
Use #91B1DA 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.