#6D3781
Closest named color: Rebecca Purple (#663399). oklch(43.9% 0.129 316.1), rgb(109, 55, 129).
Aa
White text reads best on this color (8.35:1).
About this color
#6D3781 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.129 and its hue 316°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.045 away. White text reads best on it, at 8.35:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #6D3781 |
| RGB | rgb(109, 55, 129) |
| HSL | hsl(284, 40%, 36%) |
| OKLCH | oklch(43.9% 0.129 316.1) |
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 #6D3781 | 8.35:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #6D3781 | 2.51:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #6D3781 text on white | 8.35:1 | AAA | Lc 88.4 | Fine for body text |
| #6D3781 text on black | 2.51:1 | Fails | Lc -13.8 | 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
#E4D1EC
oklch(88.4% 0.042 316)
-
Step 300
300
#D4B2E2
oklch(80.9% 0.076 316)
-
Step 400
400
#BE88D3
oklch(70.6% 0.121 316.2)
-
Step 500
500
#AD68C7
oklch(63% 0.154 316.2)
-
Step 600
600
#984EB4
oklch(55.6% 0.167 315.8)
-
Step 700
700
#823E9B
oklch(49.2% 0.156 316)
-
Step 800
800 (this color)
#6D3781
oklch(43.9% 0.129 316.1)
-
Step 900
900
#562E65
oklch(37.7% 0.101 316.1)
-
Step 950
950
#321C3B
oklch(27% 0.062 315.5)
#6D3781 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) | #254A83 | 0.117 |
| Deuteranopia (no green cones) | #384F7F | 0.102 |
| Tritanopia (no blue cones) | #6C4356 | 0.085 |
| Achromatopsia (no color) | #4E4E4E | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D3781
#6D3781
oklch(43.9% 0.129 316.1)
- #2D6103
#2D6103
oklch(43.9% 0.129 136)
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 #6D3781, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.045
- Light Eggplant #894585 ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.070
- Purple #800080 ΔE 0.075
- Blueberry #464196 ΔE 0.079
- Twilight #4E518B ΔE 0.080
- Warm Purple #952E8F ΔE 0.081
- Dark Magenta #8B008B ΔE 0.084
Use #6D3781 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.