#642E83
Closest named color: Rebecca Purple (#663399). oklch(41.5% 0.142 311), rgb(100, 46, 131).
Aa
White text reads best on this color (9.29:1).
About this color
#642E83 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.142 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.037 away. White text reads best on it, at 9.29:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.26:1 |
| White text | 9.29:1 |
Values
| HEX | #642E83 |
| RGB | rgb(100, 46, 131) |
| HSL | hsl(278, 48%, 35%) |
| OKLCH | oklch(41.5% 0.142 311) |
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 #642E83 | 9.29:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #642E83 | 2.26:1 | Fails | Lc 13.1 | Not readable |
| #642E83 text on white | 9.29:1 | AAA | Lc 90.9 | Preferred for body text |
| #642E83 text on black | 2.26:1 | Fails | Lc -11.4 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE6F6
oklch(93.7% 0.023 310.7)
-
Step 200
200
#E3D1F0
oklch(88.5% 0.046 311.2)
-
Step 300
300
#D2B2E9
oklch(81% 0.083 310.8)
-
Step 400
400
#BB87DD
oklch(70.6% 0.133 311.1)
-
Step 500
500
#AA67D4
oklch(63.2% 0.169 310.8)
-
Step 600
600
#954BC1
oklch(55.6% 0.184 310.7)
-
Step 700
700
#7F3BA6
oklch(49.1% 0.171 310.9)
-
Step 800
800 (this color)
#642E83
oklch(41.5% 0.142 311)
-
Step 900
900
#542D6C
oklch(37.7% 0.11 310.8)
-
Step 950
950
#311B3F
oklch(27% 0.069 310.8)
#642E83 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) | #054486 | 0.128 |
| Deuteranopia (no green cones) | #254881 | 0.112 |
| Tritanopia (no blue cones) | #603F54 | 0.098 |
| Achromatopsia (no color) | #474747 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642E83
#642E83
oklch(41.5% 0.142 311)
- #355700
#355700
oklch(41.4% 0.113 130.8)
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 #642E83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.060
- Blueberry #464196 ΔE 0.072
- Purple #800080 ΔE 0.072
- Dark Magenta #8B008B ΔE 0.088
- Indigo #4B0082 ΔE 0.089
- Chrysanthemum #560BAD ΔE 0.090
- Twilight #4E518B ΔE 0.090
Use #642E83 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.