#91A3FF
Closest named color: Periwinkle Blue (#8F99FB). oklch(73.9% 0.135 274.2), rgb(145, 163, 255).
Aa
Black text reads best on this color (8.88:1).
About this color
#91A3FF is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.135 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.026 away. Black text reads best on it, at 8.88:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.88:1 |
| White text | 2.36:1 |
Values
| HEX | #91A3FF |
| RGB | rgb(145, 163, 255) |
| HSL | hsl(230, 100%, 78%) |
| OKLCH | oklch(73.9% 0.135 274.2) |
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 #91A3FF | 2.36:1 | Fails | Lc -51.4 | Large or bold text, headings |
| Black text on #91A3FF | 8.88:1 | AAA | Lc 57.5 | Large or bold text, headings |
| #91A3FF text on white | 2.36:1 | Fails | Lc 46.5 | Large or bold text, headings |
| #91A3FF text on black | 8.88:1 | AAA | Lc -55.6 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8F9
oklch(88.6% 0.047 273.4)
-
Step 300
300
#B0BDF8
oklch(80.9% 0.085 274.7)
-
Step 400
400 (this color)
#91A3FF
oklch(73.9% 0.135 274.2)
-
Step 500
500
#6C7CF0
oklch(63.1% 0.173 274.4)
-
Step 600
600
#5662DE
oklch(55.6% 0.187 274.4)
-
Step 700
700
#4750C1
oklch(49.1% 0.174 274.5)
-
Step 800
800
#3A439C
oklch(42.8% 0.143 274.3)
-
Step 900
900
#31397C
oklch(37.6% 0.113 274.5)
-
Step 950
950
#1C2249
oklch(27% 0.072 274)
#91A3FF 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) | #82ADFF | 0.030 |
| Deuteranopia (no green cones) | #79A4FD | 0.029 |
| Tritanopia (no blue cones) | #6CB6C5 | 0.120 |
| Achromatopsia (no color) | #A9A9A9 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91A3FF
#91A3FF
oklch(73.9% 0.135 274.2)
- #C6A933
#C6A933
oklch(74% 0.135 94.7)
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 #91A3FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.026
- Carolina Blue #8AB8FE ΔE 0.055
- Perrywinkle #8F8CE7 ΔE 0.063
- Lavender Blue #8B88F8 ΔE 0.069
- Cornflower Blue #6495ED ΔE 0.072
- Pastel Blue #A2BFFE ΔE 0.080
- Pastel Purple #CAA0FF ΔE 0.080
- Baby Purple #CA9BF7 ΔE 0.081
Use #91A3FF 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.