#6B3F99
Closest named color: Rebecca Purple (#663399). oklch(46.4% 0.144 303.9), rgb(107, 63, 153).
Aa
White text reads best on this color (7.51:1).
About this color
#6B3F99 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.144 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.029 away. White text reads best on it, at 7.51:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.79:1 |
| White text | 7.51:1 |
Values
| HEX | #6B3F99 |
| RGB | rgb(107, 63, 153) |
| HSL | hsl(269, 42%, 42%) |
| OKLCH | oklch(46.4% 0.144 303.9) |
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 #6B3F99 | 7.51:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #6B3F99 | 2.79:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #6B3F99 text on white | 7.51:1 | AAA | Lc 85.7 | Fine for body text |
| #6B3F99 text on black | 2.79:1 | Fails | Lc -16.3 | Dividers and decoration only |
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 700.
-
Step 50
50
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DED3EF
oklch(88.4% 0.04 303.4)
-
Step 300
300
#CAB6E6
oklch(80.9% 0.07 303.8)
-
Step 400
400
#AF8FD9
oklch(70.7% 0.111 303.6)
-
Step 500
500
#9C71CF
oklch(63.1% 0.143 303.7)
-
Step 600
600
#8758BC
oklch(55.7% 0.154 303.5)
-
Step 700
700 (this color)
#6B3F99
oklch(46.4% 0.144 303.9)
-
Step 800
800
#5D3B83
oklch(42.7% 0.119 303.6)
-
Step 900
900
#4C3369
oklch(37.6% 0.093 303.6)
-
Step 950
950
#2D1E3E
oklch(27% 0.06 304.3)
#6B3F99 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) | #19539C | 0.113 |
| Deuteranopia (no green cones) | #2B5497 | 0.102 |
| Tritanopia (no blue cones) | #635166 | 0.106 |
| Achromatopsia (no color) | #555555 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B3F99
#6B3F99
oklch(46.4% 0.144 303.9)
- #4C6300
#4C6300
oklch(46.4% 0.115 123.9)
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 #6B3F99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.029
- Blueberry #464196 ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.067
- Twilight #4E518B ΔE 0.070
- Light Eggplant #894585 ΔE 0.071
- Bluey Purple #6241C7 ΔE 0.075
- Dusk #4E5481 ΔE 0.085
- Warm Purple #952E8F ΔE 0.085
Use #6B3F99 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.