#643075
Closest named color: Rebecca Purple (#663399). oklch(40.9% 0.123 317.1), rgb(100, 48, 117).
Aa
White text reads best on this color (9.45:1).
About this color
#643075 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.123 and its hue 317°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.059 away. White text reads best on it, at 9.45:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.22:1 |
| White text | 9.45:1 |
Values
| HEX | #643075 |
| RGB | rgb(100, 48, 117) |
| HSL | hsl(285, 42%, 32%) |
| OKLCH | oklch(40.9% 0.123 317.1) |
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 #643075 | 9.45:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #643075 | 2.22:1 | Fails | Lc 12.5 | Not readable |
| #643075 text on white | 9.45:1 | AAA | Lc 91.4 | Preferred for body text |
| #643075 text on black | 2.22:1 | Fails | Lc -10.9 | 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
#E4D1EB
oklch(88.4% 0.041 317)
-
Step 300
300
#D4B3E0
oklch(81% 0.072 317)
-
Step 400
400
#BE89D0
oklch(70.7% 0.116 317.3)
-
Step 500
500
#AD6AC3
oklch(63.1% 0.147 317.4)
-
Step 600
600
#9850B0
oklch(55.7% 0.159 317)
-
Step 700
700
#824097
oklch(49.2% 0.148 317.4)
-
Step 800
800 (this color)
#643075
oklch(40.9% 0.123 317.1)
-
Step 900
900
#562F63
oklch(37.8% 0.096 317.2)
-
Step 950
950
#321C3A
oklch(27% 0.061 316.6)
#643075 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) | #204377 | 0.113 |
| Deuteranopia (no green cones) | #324873 | 0.100 |
| Tritanopia (no blue cones) | #633B4D | 0.080 |
| Achromatopsia (no color) | #464646 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643075
#643075
oklch(40.9% 0.123 317.1)
- #245802
#245802
oklch(40.8% 0.123 137.2)
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 #643075, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.067
- Purple #800080 ΔE 0.078
- Grape Purple #5D1451 ΔE 0.078
- Rich Purple #720058 ΔE 0.079
- Blueberry #464196 ΔE 0.082
- Velvet #750851 ΔE 0.083
- Twilight #4E518B ΔE 0.090
Use #643075 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.