#91C0EE
Closest named color: Lightblue (#7BC8F6). oklch(79.1% 0.083 248.4), rgb(145, 192, 238).
Aa
Black text reads best on this color (10.97:1).
About this color
#91C0EE is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.083 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Lightblue (#7BC8F6), ΔE 0.028 away. Black text reads best on it, at 10.97:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Lightblue (#7BC8F6) |
| Black text | 10.97:1 |
| White text | 1.91:1 |
Values
| HEX | #91C0EE |
| RGB | rgb(145, 192, 238) |
| HSL | hsl(210, 73%, 75%) |
| OKLCH | oklch(79.1% 0.083 248.4) |
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 #91C0EE | 1.91:1 | Fails | Lc -40.7 | Non-text elements, placeholder text |
| Black text on #91C0EE | 10.97:1 | AAA | Lc 67.4 | Content text, not long reading |
| #91C0EE text on white | 1.91:1 | Fails | Lc 36.5 | Non-text elements, placeholder text |
| #91C0EE text on black | 10.97:1 | AAA | Lc -66.0 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEECFA
oklch(93.7% 0.024 248.1)
-
Step 200
200
#C2DCF7
oklch(88.4% 0.047 249.4)
-
Step 300
300 (this color)
#91C0EE
oklch(79.1% 0.083 248.4)
-
Step 400
400
#57A6EF
oklch(70.6% 0.133 248.6)
-
Step 500
500
#0A8EE9
oklch(63.2% 0.168 248.1)
-
Step 600
600
#0077C6
oklch(55.6% 0.15 248.2)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#004475
oklch(37.8% 0.103 248.3)
-
Step 950
950
#032846
oklch(27% 0.069 248.1)
#91C0EE 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) | #AEC1F0 | 0.036 |
| Deuteranopia (no green cones) | #A2B7ED | 0.029 |
| Tritanopia (no blue cones) | #70CBCF | 0.071 |
| Achromatopsia (no color) | #BBBBBB | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91C0EE
#91C0EE
oklch(79.1% 0.083 248.4)
- #DEB281
#DEB281
oklch(79.2% 0.082 69.2)
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 #91C0EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lightblue #7BC8F6 ΔE 0.028
- Sky #82CAFC ΔE 0.030
- Light Cornflower Blue #98C1D9 ΔE 0.032
- Pastel Blue #A2BFFE ΔE 0.033
- Light Sky Blue #87CEFA ΔE 0.036
- Light Grey Blue #9DBCD4 ΔE 0.037
- Carolina Blue #8AB8FE ΔE 0.037
- Sky Blue #87CEEB ΔE 0.040
Use #91C0EE 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.