#643ACE
Closest named color: Bluey Purple (#6241C7). oklch(49.1% 0.213 289.1), rgb(100, 58, 206).
Aa
White text reads best on this color (6.91:1).
About this color
#643ACE is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.213 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.016 away. White text reads best on it, at 6.91:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.213) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.03:1 |
| White text | 6.91:1 |
Values
| HEX | #643ACE |
| RGB | rgb(100, 58, 206) |
| HSL | hsl(257, 60%, 52%) |
| OKLCH | oklch(49.1% 0.213 289.1) |
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 #643ACE | 6.91:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #643ACE | 3.03:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #643ACE text on white | 6.91:1 | AA | Lc 83.1 | Fine for body text |
| #643ACE text on black | 3.03:1 | AA large text | Lc -18.8 | 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
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D7D4FD
oklch(88.5% 0.056 288.5)
-
Step 300
300
#BEB6FF
oklch(80.9% 0.102 288.9)
-
Step 400
400
#9F8CFF
oklch(70.7% 0.164 289.1)
-
Step 500
500
#8A6AFE
oklch(63.1% 0.21 288.9)
-
Step 600
600
#764BED
oklch(55.6% 0.229 288.9)
-
Step 700
700 (this color)
#643ACE
oklch(49.1% 0.213 289.1)
-
Step 800
800
#5132A7
oklch(42.7% 0.176 288.8)
-
Step 900
900
#432E84
oklch(37.7% 0.137 289.4)
-
Step 950
950
#271C4D
oklch(27% 0.087 289.7)
#643ACE 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) | #005DD2 | 0.109 |
| Deuteranopia (no green cones) | #0056CB | 0.105 |
| Tritanopia (no blue cones) | #3D6180 | 0.172 |
| Achromatopsia (no color) | #5A5A5A | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643ACE
#643ACE
oklch(49.1% 0.213 289.1)
- #666500
#666500
oklch(49.1% 0.107 109.1)
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 #643ACE, closest first.
No curated palette has a color within ΔE 0.04 of #643ACE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.016
- Blurple #5539CC ΔE 0.027
- Blue With A Hint Of Purple #533CC6 ΔE 0.031
- Burple #6832E3 ΔE 0.034
- Purple Blue #5D21D0 ΔE 0.040
- Purpley Blue #5F34E7 ΔE 0.041
- Purply Blue #661AEE ΔE 0.058
- Majorelle Blue #3F37C9 ΔE 0.063
Use #643ACE 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.