#643073
Closest named color: Rebecca Purple (#663399). oklch(40.8% 0.121 318.2), rgb(100, 48, 115).
Aa
White text reads best on this color (9.49:1).
About this color
#643073 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.121 and its hue 318°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.063 away. White text reads best on it, at 9.49:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.21:1 |
| White text | 9.49:1 |
Values
| HEX | #643073 |
| RGB | rgb(100, 48, 115) |
| HSL | hsl(287, 41%, 32%) |
| OKLCH | oklch(40.8% 0.121 318.2) |
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 #643073 | 9.49:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #643073 | 2.21:1 | Fails | Lc 12.4 | Not readable |
| #643073 text on white | 9.49:1 | AAA | Lc 91.6 | Preferred for body text |
| #643073 text on black | 2.21:1 | Fails | Lc -10.8 | Not readable |
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 800.
-
Step 50
50
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#F0E6F3
oklch(93.7% 0.02 318.4)
-
Step 200
200
#E4D1EA
oklch(88.4% 0.039 318)
-
Step 300
300
#D4B3DE
oklch(80.9% 0.069 318.3)
-
Step 400
400
#BE8ACE
oklch(70.8% 0.112 318.1)
-
Step 500
500
#AD6AC1
oklch(63% 0.145 318.1)
-
Step 600
600
#9850AD
oklch(55.5% 0.156 318.1)
-
Step 700
700
#824095
oklch(49.1% 0.146 318.2)
-
Step 800
800 (this color)
#643073
oklch(40.8% 0.121 318.2)
-
Step 900
900
#562F61
oklch(37.6% 0.094 318.5)
-
Step 950
950
#321C39
oklch(26.9% 0.06 317.7)
#643073 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) | #214275 | 0.112 |
| Deuteranopia (no green cones) | #334771 | 0.098 |
| Tritanopia (no blue cones) | #643A4C | 0.077 |
| Achromatopsia (no color) | #464646 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643073
#643073
oklch(40.8% 0.121 318.2)
- #225808
#225808
oklch(40.8% 0.121 138.3)
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 #643073, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.068
- Grape Purple #5D1451 ΔE 0.076
- Rich Purple #720058 ΔE 0.077
- Purple #800080 ΔE 0.079
- Velvet #750851 ΔE 0.080
- Blueberry #464196 ΔE 0.084
- Twilight #4E518B ΔE 0.091
Use #643073 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.