#6364B0
Closest named color: French Blue (#436BAD). oklch(53.8% 0.117 281.1), rgb(99, 100, 176).
Aa
White text reads best on this color (5.27:1).
About this color
#6364B0 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 54%, its chroma 0.117 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.043 away. White text reads best on it, at 5.27:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.98:1 |
| White text | 5.27:1 |
Values
| HEX | #6364B0 |
| RGB | rgb(99, 100, 176) |
| HSL | hsl(239, 33%, 54%) |
| OKLCH | oklch(53.8% 0.117 281.1) |
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 #6364B0 | 5.27:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #6364B0 | 3.98:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #6364B0 text on white | 5.27:1 | AA | Lc 76.1 | Fine for body text |
| #6364B0 text on black | 3.98:1 | AA large text | Lc -25.6 | 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
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D5D7ED
oklch(88.4% 0.03 281.6)
-
Step 300
300
#BABDE3
oklch(80.9% 0.054 281.6)
-
Step 400
400
#979BD5
oklch(70.8% 0.085 280.9)
-
Step 500
500
#7E81C9
oklch(63.1% 0.108 281)
-
Step 600
600 (this color)
#6364B0
oklch(53.8% 0.117 281.1)
-
Step 700
700
#57579D
oklch(49% 0.11 281.5)
-
Step 800
800
#47487F
oklch(42.8% 0.09 281.1)
-
Step 900
900
#3B3C66
oklch(37.6% 0.071 281.4)
-
Step 950
950
#23243C
oklch(27.1% 0.044 281.2)
#6364B0 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) | #486FB3 | 0.042 |
| Deuteranopia (no green cones) | #4369AE | 0.042 |
| Tritanopia (no blue cones) | #4A7381 | 0.102 |
| Achromatopsia (no color) | #6C6C6C | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6364B0
#6364B0
oklch(53.8% 0.117 281.1)
- #7C6F00
#7C6F00
oklch(53.7% 0.112 101.3)
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 #6364B0, closest first.
No curated palette has a color within ΔE 0.04 of #6364B0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.043
- Iris #6258C4 ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.059
- Dusky Blue #475F94 ΔE 0.062
- Flat Blue #3C73A8 ΔE 0.062
- Mid Blue #276AB3 ΔE 0.064
Use #6364B0 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.