#6B337E
Closest named color: Rebecca Purple (#663399). oklch(42.8% 0.131 316.8), rgb(107, 51, 126).
Aa
White text reads best on this color (8.75:1).
About this color
#6B337E is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.131 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 0.046 away. White text reads best on it, at 8.75:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.131) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.39:1 |
| White text | 8.75:1 |
Values
| HEX | #6B337E |
| RGB | rgb(107, 51, 126) |
| HSL | hsl(285, 42%, 35%) |
| OKLCH | oklch(42.8% 0.131 316.8) |
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 #6B337E | 8.75:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #6B337E | 2.39:1 | Fails | Lc 14.5 | Not readable |
| #6B337E text on white | 8.75:1 | AAA | Lc 89.5 | Fine for body text |
| #6B337E text on black | 2.39:1 | Fails | Lc -12.7 | 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
#F0E6F4
oklch(93.7% 0.021 316.5)
-
Step 200
200
#E5D1EC
oklch(88.5% 0.042 317.4)
-
Step 300
300
#D5B2E2
oklch(81% 0.076 316.8)
-
Step 400
400
#BF88D3
oklch(70.7% 0.122 316.8)
-
Step 500
500
#AF67C8
oklch(63.1% 0.158 316.9)
-
Step 600
600
#9A4CB4
oklch(55.6% 0.171 316.9)
-
Step 700
700
#833C9B
oklch(49% 0.159 316.7)
-
Step 800
800 (this color)
#6B337E
oklch(42.8% 0.131 316.8)
-
Step 900
900
#572D65
oklch(37.7% 0.103 317.1)
-
Step 950
950
#331B3B
oklch(27% 0.065 317.2)
#6B337E 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) | #204780 | 0.121 |
| Deuteranopia (no green cones) | #344D7C | 0.108 |
| Tritanopia (no blue cones) | #6A3F53 | 0.085 |
| Achromatopsia (no color) | #4B4B4B | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B337E
#6B337E
oklch(42.8% 0.131 316.8)
- #285E00
#285E00
oklch(42.8% 0.129 136.7)
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 #6B337E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.070
- Purple #800080 ΔE 0.070
- Light Eggplant #894585 ΔE 0.076
- Blueberry #464196 ΔE 0.080
- Dark Magenta #8B008B ΔE 0.083
- Twilight #4E518B ΔE 0.086
- Warm Purple #952E8F ΔE 0.087
Use #6B337E 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.