#5F63B2
Closest named color: French Blue (#436BAD). oklch(53.4% 0.122 279.2), rgb(95, 99, 178).
Aa
White text reads best on this color (5.36:1).
About this color
#5F63B2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.122 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.041 away. White text reads best on it, at 5.36:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.91:1 |
| White text | 5.36:1 |
Values
| HEX | #5F63B2 |
| RGB | rgb(95, 99, 178) |
| HSL | hsl(237, 35%, 54%) |
| OKLCH | oklch(53.4% 0.122 279.2) |
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 #5F63B2 | 5.36:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #5F63B2 | 3.91:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #5F63B2 text on white | 5.36:1 | AA | Lc 76.6 | Fine for body text |
| #5F63B2 text on black | 3.91:1 | AA large text | Lc -25.2 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D7EE
oklch(88.4% 0.032 279.8)
-
Step 300
300
#B8BEE4
oklch(80.9% 0.054 278.1)
-
Step 400
400
#959BD7
oklch(70.7% 0.088 279.5)
-
Step 500
500
#7B81CC
oklch(63% 0.112 279.2)
-
Step 600
600 (this color)
#5F63B2
oklch(53.4% 0.122 279.2)
-
Step 700
700
#5458A0
oklch(49.2% 0.114 278.9)
-
Step 800
800
#454881
oklch(42.7% 0.094 279.4)
-
Step 900
900
#3A3D68
oklch(37.8% 0.073 279.3)
-
Step 950
950
#22243D
oklch(27.1% 0.046 279.3)
#5F63B2 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) | #446EB5 | 0.041 |
| Deuteranopia (no green cones) | #3E68B0 | 0.041 |
| Tritanopia (no blue cones) | #427382 | 0.106 |
| Achromatopsia (no color) | #6B6B6B | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F63B2
#5F63B2
oklch(53.4% 0.122 279.2)
- #7D6D00
#7D6D00
oklch(53.4% 0.111 99.1)
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 #5F63B2, closest first.
No curated palette has a color within ΔE 0.04 of #5F63B2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.041
- Iris #6258C4 ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.052
- Slate Blue #6A5ACD ΔE 0.052
- Light Indigo #6D5ACF ΔE 0.056
- Mid Blue #276AB3 ΔE 0.060
- Dusky Blue #475F94 ΔE 0.060
- Flat Blue #3C73A8 ΔE 0.061
Use #5F63B2 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.