#5863B3
Closest named color: French Blue (#436BAD). oklch(52.9% 0.125 275.4), rgb(88, 99, 179).
Aa
White text reads best on this color (5.45:1).
About this color
#5863B3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.125 and its hue 275°. 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 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #5863B3 |
| RGB | rgb(88, 99, 179) |
| HSL | hsl(233, 37%, 52%) |
| OKLCH | oklch(52.9% 0.125 275.4) |
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 #5863B3 | 5.45:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #5863B3 | 3.85:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #5863B3 text on white | 5.45:1 | AA | Lc 77.1 | Fine for body text |
| #5863B3 text on black | 3.85:1 | AA large text | Lc -24.7 | 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 600.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D3D8EE
oklch(88.5% 0.031 275.6)
-
Step 300
300
#B6BEE6
oklch(80.9% 0.057 276.2)
-
Step 400
400
#909CD9
oklch(70.6% 0.09 275.3)
-
Step 500
500
#7683CF
oklch(63.2% 0.115 275.2)
-
Step 600
600 (this color)
#5863B3
oklch(52.9% 0.125 275.4)
-
Step 700
700
#4F59A2
oklch(49.2% 0.117 275.4)
-
Step 800
800
#414983
oklch(42.7% 0.096 275.6)
-
Step 900
900
#363D69
oklch(37.6% 0.076 275.3)
-
Step 950
950
#20243E
oklch(27% 0.049 276)
#5863B3 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) | #426DB6 | 0.034 |
| Deuteranopia (no green cones) | #3966B1 | 0.036 |
| Tritanopia (no blue cones) | #327482 | 0.111 |
| Achromatopsia (no color) | #696969 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5863B3
#5863B3
oklch(52.9% 0.125 275.4)
- #7F6A00
#7F6A00
oklch(52.9% 0.109 95.3)
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 #5863B3, closest first.
No curated palette has a color within ΔE 0.04 of #5863B3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.034
- Iris #6258C4 ΔE 0.043
- Mid Blue #276AB3 ΔE 0.051
- Dark Periwinkle #665FD1 ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.055
- Dusky Blue #475F94 ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.057
- Light Indigo #6D5ACF ΔE 0.059
Use #5863B3 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.