#91A3FA
Closest named color: Periwinkle Blue (#8F99FB). oklch(73.7% 0.128 274), rgb(145, 163, 250).
Aa
Black text reads best on this color (8.82:1).
About this color
#91A3FA is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.128 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.027 away. Black text reads best on it, at 8.82:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.82:1 |
| White text | 2.38:1 |
Values
| HEX | #91A3FA |
| RGB | rgb(145, 163, 250) |
| HSL | hsl(230, 91%, 77%) |
| OKLCH | oklch(73.7% 0.128 274) |
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 #91A3FA | 2.38:1 | Fails | Lc -51.8 | Large or bold text, headings |
| Black text on #91A3FA | 8.82:1 | AAA | Lc 57.2 | Large or bold text, headings |
| #91A3FA text on white | 2.38:1 | Fails | Lc 46.8 | Large or bold text, headings |
| #91A3FA text on black | 8.82:1 | AAA | Lc -55.2 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300
#B0BDF5
oklch(80.8% 0.081 274.3)
-
Step 400
400 (this color)
#91A3FA
oklch(73.7% 0.128 274)
-
Step 500
500
#6C7EEB
oklch(63.1% 0.164 273.7)
-
Step 600
600
#5664D9
oklch(55.6% 0.178 274)
-
Step 700
700
#4752BC
oklch(49% 0.165 274.1)
-
Step 800
800
#3A4498
oklch(42.7% 0.136 274)
-
Step 900
900
#313A79
oklch(37.6% 0.107 274)
-
Step 950
950
#1D2347
oklch(27.1% 0.067 274)
#91A3FA 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) | #85ADFE | 0.027 |
| Deuteranopia (no green cones) | #7CA4F8 | 0.026 |
| Tritanopia (no blue cones) | #6EB5C3 | 0.114 |
| Achromatopsia (no color) | #A8A8A8 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91A3FA
#91A3FA
oklch(73.7% 0.128 274)
- #C4A83D
#C4A83D
oklch(73.7% 0.128 94.2)
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 #91A3FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.027
- Carolina Blue #8AB8FE ΔE 0.054
- Perrywinkle #8F8CE7 ΔE 0.060
- Lavender Blue #8B88F8 ΔE 0.070
- Cornflower Blue #6495ED ΔE 0.070
- Pastel Blue #A2BFFE ΔE 0.078
- Pale Purple #B790D4 ΔE 0.079
- Pastel Purple #CAA0FF ΔE 0.081
Use #91A3FA 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.