#91B1FD
Closest named color: Carolina Blue (#8AB8FE). oklch(76.6% 0.115 266.3), rgb(145, 177, 253).
Aa
Black text reads best on this color (9.91:1).
About this color
#91B1FD is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.115 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.019 away. Black text reads best on it, at 9.91:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.91:1 |
| White text | 2.11:1 |
Values
| HEX | #91B1FD |
| RGB | rgb(145, 177, 253) |
| HSL | hsl(222, 96%, 78%) |
| OKLCH | oklch(76.6% 0.115 266.3) |
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 #91B1FD | 2.11:1 | Fails | Lc -46.1 | Large or bold text, headings |
| Black text on #91B1FD | 9.91:1 | AAA | Lc 62.5 | Content text, not long reading |
| #91B1FD text on white | 2.11:1 | Fails | Lc 41.4 | Non-text elements, placeholder text |
| #91B1FD text on black | 9.91:1 | AAA | Lc -60.8 | 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
#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)
#91B1FD
oklch(76.6% 0.115 266.3)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#517EFF
oklch(63% 0.198 266.3)
-
Step 600
600
#315DFF
oklch(55.6% 0.244 266.2)
-
Step 700
700
#2348E4
oklch(49.1% 0.237 266.2)
-
Step 800
800
#1D3DB8
oklch(42.7% 0.196 266.1)
-
Step 900
900
#1C3691
oklch(37.6% 0.153 266.5)
-
Step 950
950
#102155
oklch(27% 0.097 266.2)
#91B1FD 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) | #96B7FF | 0.017 |
| Deuteranopia (no green cones) | #8BAEFB | 0.011 |
| Tritanopia (no blue cones) | #6BC1CC | 0.104 |
| Achromatopsia (no color) | #B2B2B2 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B1FD
#91B1FD
oklch(76.6% 0.115 266.3)
- #D3AE56
#D3AE56
oklch(76.6% 0.115 86.6)
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 #91B1FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.019
- Pastel Blue #A2BFFE ΔE 0.045
- Periwinkle Blue #8F99FB ΔE 0.062
- Lightblue #7BC8F6 ΔE 0.067
- Sky #82CAFC ΔE 0.067
- Light Grey Blue #9DBCD4 ΔE 0.076
- Light Cornflower Blue #98C1D9 ΔE 0.078
- Light Sky Blue #87CEFA ΔE 0.079
Use #91B1FD 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.