#91BBE1
Closest named color: Light Grey Blue (#9DBCD4). oklch(77.5% 0.071 246.2), rgb(145, 187, 225).
Aa
Black text reads best on this color (10.39:1).
About this color
#91BBE1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 78%, its chroma 0.071 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.024 away. Black text reads best on it, at 10.39:1.
| Hue family | Blues |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.39:1 |
| White text | 2.01:1 |
Values
| HEX | #91BBE1 |
| RGB | rgb(145, 187, 225) |
| HSL | hsl(209, 57%, 73%) |
| OKLCH | oklch(77.5% 0.071 246.2) |
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 #91BBE1 | 2.01:1 | Fails | Lc -43.7 | Non-text elements, placeholder text |
| Black text on #91BBE1 | 10.39:1 | AAA | Lc 64.8 | Content text, not long reading |
| #91BBE1 text on white | 2.01:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #91BBE1 text on black | 10.39:1 | AAA | Lc -63.2 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C5DCF2
oklch(88.4% 0.039 247.1)
-
Step 300
300 (this color)
#91BBE1
oklch(77.5% 0.071 246.2)
-
Step 400
400
#61A7E3
oklch(70.7% 0.113 246.2)
-
Step 500
500
#2B8FDB
oklch(63% 0.145 246.4)
-
Step 600
600
#0078C1
oklch(55.5% 0.143 246.2)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
Step 800
800
#005287
oklch(42.6% 0.111 246.5)
-
Step 900
900
#054570
oklch(37.8% 0.094 245.8)
-
Step 950
950
#082842
oklch(26.9% 0.061 247.3)
#91BBE1 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) | #ACBBE3 | 0.034 |
| Deuteranopia (no green cones) | #A2B3E0 | 0.028 |
| Tritanopia (no blue cones) | #76C4C7 | 0.060 |
| Achromatopsia (no color) | #B6B6B6 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91BBE1
#91BBE1
oklch(77.5% 0.071 246.2)
- #D5AD86
#D5AD86
oklch(77.4% 0.07 65.8)
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 #91BBE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.024
- Light Cornflower Blue #98C1D9 ΔE 0.025
- Lightblue #7BC8F6 ΔE 0.041
- Cloudy Blue #ACC2D9 ΔE 0.042
- Carolina Blue #8AB8FE ΔE 0.046
- Sky #82CAFC ΔE 0.047
- Pastel Blue #A2BFFE ΔE 0.048
- Light Steel Blue #B0C4DE ΔE 0.048
Use #91BBE1 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.