#6C3E91
Closest named color: Rebecca Purple (#663399). oklch(45.8% 0.136 307.5), rgb(108, 62, 145).
Aa
White text reads best on this color (7.67:1).
About this color
#6C3E91 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.136 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.032 away. White text reads best on it, at 7.67:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #6C3E91 |
| RGB | rgb(108, 62, 145) |
| HSL | hsl(273, 40%, 41%) |
| OKLCH | oklch(45.8% 0.136 307.5) |
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 #6C3E91 | 7.67:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #6C3E91 | 2.73:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #6C3E91 text on white | 7.67:1 | AAA | Lc 86.3 | Fine for body text |
| #6C3E91 text on black | 2.73:1 | Fails | Lc -15.7 | 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 800.
-
Step 50
50
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E1D2F0
oklch(88.5% 0.044 307.9)
-
Step 300
300
#CEB3E9
oklch(80.8% 0.08 307.4)
-
Step 400
400
#B68ADE
oklch(70.7% 0.128 307.5)
-
Step 500
500
#A46AD4
oklch(63% 0.162 307.6)
-
Step 600
600
#8F4FC1
oklch(55.5% 0.176 307.5)
-
Step 700
700
#7A3FA7
oklch(49.1% 0.164 307.6)
-
Step 800
800 (this color)
#6C3E91
oklch(45.8% 0.136 307.5)
-
Step 900
900
#512F6C
oklch(37.7% 0.106 307.9)
-
Step 950
950
#2F1C3F
oklch(26.9% 0.067 307.6)
#6C3E91 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) | #215194 | 0.111 |
| Deuteranopia (no green cones) | #32548F | 0.100 |
| Tritanopia (no blue cones) | #664D61 | 0.097 |
| Achromatopsia (no color) | #535353 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C3E91
#6C3E91
oklch(45.8% 0.136 307.5)
- #456300
#456300
oklch(45.9% 0.119 127.4)
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 #6C3E91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Light Eggplant #894585 ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.066
- Blueberry #464196 ΔE 0.067
- Twilight #4E518B ΔE 0.068
- Dusk #4E5481 ΔE 0.081
- Warm Purple #952E8F ΔE 0.082
- Bluey Purple #6241C7 ΔE 0.089
Use #6C3E91 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.