#5A63A3
Closest named color: French Blue (#436BAD). oklch(52.1% 0.101 276.2), rgb(90, 99, 163).
Aa
White text reads best on this color (5.60:1).
About this color
#5A63A3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.101 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.034 away. White text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #5A63A3 |
| RGB | rgb(90, 99, 163) |
| HSL | hsl(233, 29%, 50%) |
| OKLCH | oklch(52.1% 0.101 276.2) |
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 #5A63A3 | 5.60:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #5A63A3 | 3.74:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #5A63A3 text on white | 5.60:1 | AA | Lc 77.9 | Fine for body text |
| #5A63A3 text on black | 3.74:1 | 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
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D4D8EC
oklch(88.5% 0.028 276.8)
-
Step 300
300
#B8BFE1
oklch(81% 0.049 276.1)
-
Step 400
400
#939DD2
oklch(70.8% 0.078 275.9)
-
Step 500
500
#7984C6
oklch(63.2% 0.1 275.9)
-
Step 600
600
#636CB2
oklch(55.5% 0.109 276.7)
-
Step 700
700 (this color)
#5A63A3
oklch(52.1% 0.101 276.2)
-
Step 800
800
#434A7C
oklch(42.7% 0.083 276.2)
-
Step 900
900
#383E64
oklch(37.7% 0.065 276)
-
Step 950
950
#21253B
oklch(27.2% 0.041 275.4)
#5A63A3 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) | #4C6BA6 | 0.026 |
| Deuteranopia (no green cones) | #4665A2 | 0.026 |
| Tritanopia (no blue cones) | #41707B | 0.090 |
| Achromatopsia (no color) | #686868 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A63A3
#5A63A3
oklch(52.1% 0.101 276.2)
- #7B6811
#7B6811
oklch(52.1% 0.101 95.5)
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 #5A63A3, closest first.
No curated palette has a color within ΔE 0.04 of #5A63A3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.034
- Dusky Blue #475F94 ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.052
- Muted Blue #3B719F ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.055
- Denim #3B638C ΔE 0.056
- Mid Blue #276AB3 ΔE 0.056
- Dull Blue #49759C ΔE 0.057
Use #5A63A3 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.