#642D72
Closest named color: Rebecca Purple (#663399). oklch(40.3% 0.125 319.1), rgb(100, 45, 114).
Aa
White text reads best on this color (9.72:1).
About this color
#642D72 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.125 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.065 away. White text reads best on it, at 9.72:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.125) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.16:1 |
| White text | 9.72:1 |
Values
| HEX | #642D72 |
| RGB | rgb(100, 45, 114) |
| HSL | hsl(288, 43%, 31%) |
| OKLCH | oklch(40.3% 0.125 319.1) |
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 #642D72 | 9.72:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #642D72 | 2.16:1 | Fails | Lc 11.9 | Not readable |
| #642D72 text on white | 9.72:1 | AAA | Lc 92.1 | Preferred for body text |
| #642D72 text on black | 2.16:1 | Fails | Lc -10.3 | 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
#F8F3FA
oklch(97% 0.011 316.5)
-
Step 100
100
#F0E6F3
oklch(93.7% 0.02 318.4)
-
Step 200
200
#E5D1EA
oklch(88.5% 0.04 319.5)
-
Step 300
300
#D5B2DF
oklch(80.9% 0.073 318.6)
-
Step 400
400
#C088CF
oklch(70.7% 0.118 319)
-
Step 500
500
#AF69C2
oklch(63.1% 0.148 318.8)
-
Step 600
600
#9A4EAE
oklch(55.5% 0.161 318.9)
-
Step 700
700
#843E96
oklch(49.1% 0.151 319)
-
Step 800
800 (this color)
#642D72
oklch(40.3% 0.125 319.1)
-
Step 900
900
#572E62
oklch(37.7% 0.098 318.8)
-
Step 950
950
#331C39
oklch(27.1% 0.06 319.1)
#642D72 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) | #1D4074 | 0.118 |
| Deuteranopia (no green cones) | #314670 | 0.104 |
| Tritanopia (no blue cones) | #64384B | 0.078 |
| Achromatopsia (no color) | #444444 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642D72
#642D72
oklch(40.3% 0.125 319.1)
- #1C5703
#1C5703
oklch(40.2% 0.125 139.1)
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 #642D72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.065
- Grape Purple #5D1451 ΔE 0.071
- Dark Slate Blue #483D8B ΔE 0.072
- Rich Purple #720058 ΔE 0.072
- Purple #800080 ΔE 0.076
- Velvet #750851 ΔE 0.076
- Blueberry #464196 ΔE 0.088
- Royal Purple #4B006E ΔE 0.094
Use #642D72 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.