#643DC2
Closest named color: Bluey Purple (#6241C7). oklch(48.4% 0.195 290.7), rgb(100, 61, 194).
Aa
White text reads best on this color (7.02:1).
About this color
#643DC2 is a medium-dark, vivid purple. In OKLCH its lightness is 48%, its chroma 0.195 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.011 away. White text reads best on it, at 7.02:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.195) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 2.98:1 |
| White text | 7.02:1 |
Values
| HEX | #643DC2 |
| RGB | rgb(100, 61, 194) |
| HSL | hsl(258, 52%, 50%) |
| OKLCH | oklch(48.4% 0.195 290.7) |
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 #643DC2 | 7.02:1 | AAA | Lc -88.7 | Fine for body text |
| Black text on #643DC2 | 2.98:1 | Fails | Lc 20.3 | Dividers and decoration only |
| #643DC2 text on white | 7.02:1 | AAA | Lc 83.7 | Fine for body text |
| #643DC2 text on black | 2.98:1 | Fails | Lc -18.3 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4FA
oklch(88.5% 0.052 290.1)
-
Step 300
300
#C0B6FA
oklch(80.9% 0.095 290.8)
-
Step 400
400
#A18DF7
oklch(70.6% 0.152 290.6)
-
Step 500
500
#8D6DF3
oklch(63.1% 0.193 290.8)
-
Step 600
600
#7850E2
oklch(55.6% 0.21 290.5)
-
Step 700
700 (this color)
#643DC2
oklch(48.4% 0.195 290.7)
-
Step 800
800
#53359F
oklch(42.7% 0.163 290.9)
-
Step 900
900
#44307E
oklch(37.7% 0.126 290.9)
-
Step 950
950
#271D4A
oklch(27% 0.08 290.2)
#643DC2 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) | #005BC6 | 0.108 |
| Deuteranopia (no green cones) | #0056BF | 0.106 |
| Tritanopia (no blue cones) | #455E7B | 0.155 |
| Achromatopsia (no color) | #595959 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643DC2
#643DC2
oklch(48.4% 0.195 290.7)
- #626400
#626400
oklch(48.5% 0.107 111.1)
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 #643DC2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.011
- Blue With A Hint Of Purple #533CC6 ΔE 0.031
- Blurple #5539CC ΔE 0.033
- Purple Blue #5D21D0 ΔE 0.049
- Burple #6832E3 ΔE 0.053
- Iris #6258C4 ΔE 0.058
- Purpley Blue #5F34E7 ΔE 0.060
- Majorelle Blue #3F37C9 ΔE 0.065
Use #643DC2 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.