#91AFF4
Closest named color: Carolina Blue (#8AB8FE). oklch(75.8% 0.105 265.9), rgb(145, 175, 244).
Aa
Black text reads best on this color (9.64:1).
About this color
#91AFF4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.105 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.025 away. Black text reads best on it, at 9.64:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.64:1 |
| White text | 2.17:1 |
Values
| HEX | #91AFF4 |
| RGB | rgb(145, 175, 244) |
| HSL | hsl(222, 82%, 76%) |
| OKLCH | oklch(75.8% 0.105 265.9) |
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 #91AFF4 | 2.17:1 | Fails | Lc -47.5 | Large or bold text, headings |
| Black text on #91AFF4 | 9.64:1 | AAA | Lc 61.2 | Content text, not long reading |
| #91AFF4 text on white | 2.17:1 | Fails | Lc 42.8 | Non-text elements, placeholder text |
| #91AFF4 text on black | 9.64:1 | AAA | Lc -59.4 | 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 300.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300 (this color)
#91AFF4
oklch(75.8% 0.105 265.9)
-
Step 400
400
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500
#507FFF
oklch(63.1% 0.197 265.8)
-
Step 600
600
#3260F9
oklch(55.6% 0.233 265.9)
-
Step 700
700
#264DD9
oklch(49% 0.218 266)
-
Step 800
800
#2041AF
oklch(42.7% 0.179 265.9)
-
Step 900
900
#1E398B
oklch(37.8% 0.14 265.9)
-
Step 950
950
#122251
oklch(27% 0.089 266.3)
#91AFF4 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) | #97B5F7 | 0.018 |
| Deuteranopia (no green cones) | #8DACF2 | 0.010 |
| Tritanopia (no blue cones) | #70BDC7 | 0.094 |
| Achromatopsia (no color) | #B0B0B0 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91AFF4
#91AFF4
oklch(75.8% 0.105 265.9)
- #CEAC5E
#CEAC5E
oklch(75.8% 0.105 86.3)
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 #91AFF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.025
- Pastel Blue #A2BFFE ΔE 0.049
- Periwinkle Blue #8F99FB ΔE 0.061
- Lightblue #7BC8F6 ΔE 0.068
- Light Grey Blue #9DBCD4 ΔE 0.068
- Sky #82CAFC ΔE 0.070
- Light Cornflower Blue #98C1D9 ΔE 0.072
- Light Sky Blue #87CEFA ΔE 0.081
Use #91AFF4 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.