#91C9F0
Closest named color: Light Sky Blue (#87CEFA). oklch(81.1% 0.08 239.4), rgb(145, 201, 240).
Aa
Black text reads best on this color (11.81:1).
About this color
#91C9F0 is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.080 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sky Blue (#87CEFA), ΔE 0.018 away. Black text reads best on it, at 11.81:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Light Sky Blue (#87CEFA) |
| Black text | 11.81:1 |
| White text | 1.77:1 |
Values
| HEX | #91C9F0 |
| RGB | rgb(145, 201, 240) |
| HSL | hsl(205, 76%, 75%) |
| OKLCH | oklch(81.1% 0.08 239.4) |
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 #91C9F0 | 1.77:1 | Fails | Lc -36.7 | Non-text elements, placeholder text |
| Black text on #91C9F0 | 11.81:1 | AAA | Lc 71.2 | Content text, not long reading |
| #91C9F0 text on white | 1.77:1 | Fails | Lc 32.7 | Non-text elements, placeholder text |
| #91C9F0 text on black | 11.81:1 | AAA | Lc -70.0 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DDECF8
oklch(93.5% 0.023 241.9)
-
Step 200
200
#BFDEF4
oklch(88.5% 0.045 238.9)
-
Step 300
300 (this color)
#91C9F0
oklch(81.1% 0.08 239.4)
-
Step 400
400
#47AAE8
oklch(70.6% 0.129 239.8)
-
Step 500
500
#0093D6
oklch(63.1% 0.143 239.3)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006899
oklch(49.2% 0.111 239.3)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#00466A
oklch(37.6% 0.086 240.1)
-
Step 950
950
#002A41
oklch(27.1% 0.061 239)
#91C9F0 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) | #B8C8F2 | 0.046 |
| Deuteranopia (no green cones) | #ABBEEF | 0.039 |
| Tritanopia (no blue cones) | #6ED3D6 | 0.063 |
| Achromatopsia (no color) | #C2C2C2 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91C9F0
#91C9F0
oklch(81.1% 0.08 239.4)
- #E9B58D
#E9B58D
oklch(81.1% 0.081 58.9)
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 #91C9F0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sky Blue #87CEFA ΔE 0.018
- Sky Blue #87CEEB ΔE 0.020
- Sky #82CAFC ΔE 0.021
- Lightblue #7BC8F6 ΔE 0.024
- Baby Blue #A2CFFE ΔE 0.032
- Light Cornflower Blue #98C1D9 ΔE 0.033
- Light Steel Blue #B0C4DE ΔE 0.041
- Cloudy Blue #ACC2D9 ΔE 0.041
Use #91C9F0 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.