#91A3EB
Closest named color: Periwinkle Blue (#8F99FB). oklch(73% 0.107 272.8), rgb(145, 163, 235).
Aa
Black text reads best on this color (8.64:1).
About this color
#91A3EB is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.107 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.039 away. Black text reads best on it, at 8.64:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.64:1 |
| White text | 2.42:1 |
Values
| HEX | #91A3EB |
| RGB | rgb(145, 163, 235) |
| HSL | hsl(228, 69%, 75%) |
| OKLCH | oklch(73% 0.107 272.8) |
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 #91A3EB | 2.42:1 | Fails | Lc -52.8 | Large or bold text, headings |
| Black text on #91A3EB | 8.64:1 | AAA | Lc 56.2 | Large or bold text, headings |
| #91A3EB text on white | 2.42:1 | Fails | Lc 47.8 | Large or bold text, headings |
| #91A3EB text on black | 8.64:1 | AAA | Lc -54.2 | 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 400.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D1D8F2
oklch(88.5% 0.037 273.7)
-
Step 300
300
#B2BEED
oklch(80.8% 0.068 273.6)
-
Step 400
400 (this color)
#91A3EB
oklch(73% 0.107 272.8)
-
Step 500
500
#6E82DB
oklch(63.1% 0.136 272.4)
-
Step 600
600
#5869C9
oklch(55.6% 0.149 273.1)
-
Step 700
700
#4857AE
oklch(49.1% 0.139 272.9)
-
Step 800
800
#3B488D
oklch(42.8% 0.114 272.7)
-
Step 900
900
#323D70
oklch(37.7% 0.088 272.4)
-
Step 950
950
#1D2442
oklch(27% 0.057 272.2)
#91A3EB 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) | #8BAAEE | 0.018 |
| Deuteranopia (no green cones) | #84A3E9 | 0.017 |
| Tritanopia (no blue cones) | #75B1BD | 0.095 |
| Achromatopsia (no color) | #A6A6A6 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91A3EB
#91A3EB
oklch(73% 0.107 272.8)
- #BFA653
#BFA653
oklch(73% 0.107 92.8)
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 #91A3EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.039
- Carolina Blue #8AB8FE ΔE 0.055
- Perrywinkle #8F8CE7 ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.069
- Pale Purple #B790D4 ΔE 0.070
- Lavender Blue #8B88F8 ΔE 0.078
- Pastel Blue #A2BFFE ΔE 0.079
- Baby Purple #CA9BF7 ΔE 0.085
Use #91A3EB 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.