#91A5EB
Closest named color: Periwinkle Blue (#8F99FB). oklch(73.4% 0.104 271.4), rgb(145, 165, 235).
Aa
Black text reads best on this color (8.78:1).
About this color
#91A5EB is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.104 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.044 away. Black text reads best on it, at 8.78:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.78:1 |
| White text | 2.39:1 |
Values
| HEX | #91A5EB |
| RGB | rgb(145, 165, 235) |
| HSL | hsl(227, 69%, 75%) |
| OKLCH | oklch(73.4% 0.104 271.4) |
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 #91A5EB | 2.39:1 | Fails | Lc -52.0 | Large or bold text, headings |
| Black text on #91A5EB | 8.78:1 | AAA | Lc 56.9 | Large or bold text, headings |
| #91A5EB text on white | 2.39:1 | Fails | Lc 47.0 | Large or bold text, headings |
| #91A5EB text on black | 8.78:1 | AAA | Lc -55.0 | 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
#D0D8F2
oklch(88.4% 0.037 272)
-
Step 300
300
#B1BFEC
oklch(80.9% 0.066 271.4)
-
Step 400
400 (this color)
#91A5EB
oklch(73.4% 0.104 271.4)
-
Step 500
500
#6D83DA
oklch(63.2% 0.133 271.4)
-
Step 600
600
#566BC7
oklch(55.7% 0.144 271.4)
-
Step 700
700
#4658AC
oklch(49% 0.135 271.5)
-
Step 800
800
#3A498B
oklch(42.8% 0.11 271.4)
-
Step 900
900
#313D6F
oklch(37.6% 0.087 271.5)
-
Step 950
950
#1D2441
oklch(26.9% 0.055 272)
#91A5EB 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) | #8EACEE | 0.018 |
| Deuteranopia (no green cones) | #86A4E9 | 0.015 |
| Tritanopia (no blue cones) | #75B3BE | 0.093 |
| Achromatopsia (no color) | #A8A8A8 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91A5EB
#91A5EB
oklch(73.4% 0.104 271.4)
- #C1A757
#C1A757
oklch(73.5% 0.105 91.7)
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 #91A5EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.044
- Carolina Blue #8AB8FE ΔE 0.050
- Perrywinkle #8F8CE7 ΔE 0.065
- Pale Purple #B790D4 ΔE 0.072
- Cornflower Blue #6495ED ΔE 0.073
- Pastel Blue #A2BFFE ΔE 0.074
- Light Grey Blue #9DBCD4 ΔE 0.082
- Lavender Blue #8B88F8 ΔE 0.083
Use #91A5EB 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.