#5B63A2
Closest named color: French Blue (#436BAD). oklch(52.1% 0.1 276.9), rgb(91, 99, 162).
Aa
White text reads best on this color (5.59:1).
About this color
#5B63A2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.100 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.036 away. White text reads best on it, at 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #5B63A2 |
| RGB | rgb(91, 99, 162) |
| HSL | hsl(233, 28%, 50%) |
| OKLCH | oklch(52.1% 0.1 276.9) |
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 #5B63A2 | 5.59:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #5B63A2 | 3.75:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #5B63A2 text on white | 5.59:1 | AA | Lc 77.9 | Fine for body text |
| #5B63A2 text on black | 3.75:1 | AA large text | Lc -23.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EB
oklch(88.5% 0.026 276.4)
-
Step 300
300
#B8BEE0
oklch(80.8% 0.048 277.4)
-
Step 400
400
#949DD1
oklch(70.8% 0.077 276.6)
-
Step 500
500
#7A84C5
oklch(63.2% 0.098 276.5)
-
Step 600
600
#646CB1
oklch(55.5% 0.107 277.3)
-
Step 700
700 (this color)
#5B63A2
oklch(52.1% 0.1 276.9)
-
Step 800
800
#444A7C
oklch(42.8% 0.083 277.1)
-
Step 900
900
#393E63
oklch(37.7% 0.064 277)
-
Step 950
950
#21243A
oklch(26.8% 0.041 277.3)
#5B63A2 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) | #4D6BA4 | 0.026 |
| Deuteranopia (no green cones) | #4765A1 | 0.026 |
| Tritanopia (no blue cones) | #44707B | 0.088 |
| Achromatopsia (no color) | #686868 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B63A2
#5B63A2
oklch(52.1% 0.1 276.9)
- #7A6915
#7A6915
oklch(52.2% 0.1 96.9)
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 #5B63A2, closest first.
No curated palette has a color within ΔE 0.04 of #5B63A2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.036
- Dusky Blue #475F94 ΔE 0.038
- Muted Blue #3B719F ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.056
- Denim #3B638C ΔE 0.056
- Dull Blue #49759C ΔE 0.057
- Mid Blue #276AB3 ΔE 0.058
Use #5B63A2 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.