#6C3583
Closest named color: Rebecca Purple (#663399). oklch(43.5% 0.134 314.8), rgb(108, 53, 131).
Aa
White text reads best on this color (8.48:1).
About this color
#6C3583 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.134 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.040 away. White text reads best on it, at 8.48:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.47:1 |
| White text | 8.48:1 |
Values
| HEX | #6C3583 |
| RGB | rgb(108, 53, 131) |
| HSL | hsl(282, 42%, 36%) |
| OKLCH | oklch(43.5% 0.134 314.8) |
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 #6C3583 | 8.48:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #6C3583 | 2.47:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #6C3583 text on white | 8.48:1 | AAA | Lc 88.8 | Fine for body text |
| #6C3583 text on black | 2.47:1 | Fails | Lc -13.4 | 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
#F8F3FA
oklch(97% 0.011 316.5)
-
Step 100
100
#F0E6F5
oklch(93.7% 0.023 314.7)
-
Step 200
200
#E4D1ED
oklch(88.5% 0.043 315)
-
Step 300
300
#D4B2E4
oklch(80.9% 0.078 314.9)
-
Step 400
400
#BE88D6
oklch(70.8% 0.125 315)
-
Step 500
500
#AD67CB
oklch(63% 0.161 314.9)
-
Step 600
600
#984CB8
oklch(55.6% 0.174 314.7)
-
Step 700
700
#823C9E
oklch(49.1% 0.162 315.1)
-
Step 800
800 (this color)
#6C3583
oklch(43.5% 0.134 314.8)
-
Step 900
900
#562D67
oklch(37.7% 0.105 315.1)
-
Step 950
950
#321B3C
oklch(26.9% 0.066 314.9)
#6C3583 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) | #1F4A86 | 0.122 |
| Deuteranopia (no green cones) | #344E81 | 0.106 |
| Tritanopia (no blue cones) | #6A4257 | 0.088 |
| Achromatopsia (no color) | #4D4D4D | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C3583
#6C3583
oklch(43.5% 0.134 314.8)
- #2F5F00
#2F5F00
oklch(43.4% 0.126 134.9)
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 #6C3583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.068
- Light Eggplant #894585 ΔE 0.072
- Purple #800080 ΔE 0.072
- Blueberry #464196 ΔE 0.077
- Dark Magenta #8B008B ΔE 0.082
- Twilight #4E518B ΔE 0.082
- Warm Purple #952E8F ΔE 0.083
Use #6C3583 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.