#91BFFF
Closest named color: Pastel Blue (#A2BFFE). oklch(79.6% 0.104 256.7), rgb(145, 191, 255).
Aa
Black text reads best on this color (11.10:1).
About this color
#91BFFF is a light, moderately saturated blue. In OKLCH its lightness is 80%, its chroma 0.104 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.020 away. Black text reads best on it, at 11.10:1.
| Hue family | Blues |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.10:1 |
| White text | 1.89:1 |
Values
| HEX | #91BFFF |
| RGB | rgb(145, 191, 255) |
| HSL | hsl(215, 100%, 78%) |
| OKLCH | oklch(79.6% 0.104 256.7) |
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 #91BFFF | 1.89:1 | Fails | Lc -40.1 | Non-text elements, placeholder text |
| Black text on #91BFFF | 11.10:1 | AAA | Lc 68.0 | Content text, not long reading |
| #91BFFF text on white | 1.89:1 | Fails | Lc 35.9 | Non-text elements, placeholder text |
| #91BFFF text on black | 11.10:1 | AAA | Lc -66.6 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DDEBFE
oklch(93.5% 0.03 256)
-
Step 200
200
#C2DBFF
oklch(88.5% 0.057 257.5)
-
Step 300
300 (this color)
#91BFFF
oklch(79.6% 0.104 256.7)
-
Step 400
400
#5DA1FF
oklch(70.7% 0.155 256.9)
-
Step 500
500
#2486FF
oklch(63.2% 0.2 256.7)
-
Step 600
600
#006EE2
oklch(55.6% 0.196 256.8)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800
#004B9E
oklch(42.6% 0.15 256.7)
-
Step 900
900
#003E86
oklch(37.6% 0.133 257)
-
Step 950
950
#042550
oklch(27% 0.088 256.9)
#91BFFF 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) | #A7C2FF | 0.028 |
| Deuteranopia (no green cones) | #9AB8FE | 0.020 |
| Tritanopia (no blue cones) | #67CDD5 | 0.092 |
| Achromatopsia (no color) | #BCBCBC | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91BFFF
#91BFFF
oklch(79.6% 0.104 256.7)
- #E2B46D
#E2B46D
oklch(79.6% 0.104 77.2)
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 #91BFFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.020
- Carolina Blue #8AB8FE ΔE 0.021
- Sky #82CAFC ΔE 0.033
- Lightblue #7BC8F6 ΔE 0.037
- Light Sky Blue #87CEFA ΔE 0.043
- Baby Blue #A2CFFE ΔE 0.050
- Sky Blue #87CEEB ΔE 0.057
- Light Cornflower Blue #98C1D9 ΔE 0.057
Use #91BFFF 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.