#6C3397
Closest named color: Rebecca Purple (#663399). oklch(44.6% 0.16 307.3), rgb(108, 51, 151).
Aa
White text reads best on this color (8.20:1).
About this color
#6C3397 is a dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.160 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 0.012 away. White text reads best on it, at 8.20:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.55:1 |
| White text | 8.20:1 |
Values
| HEX | #6C3397 |
| RGB | rgb(108, 51, 151) |
| HSL | hsl(274, 50%, 40%) |
| OKLCH | oklch(44.6% 0.16 307.3) |
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 #6C3397 | 8.20:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #6C3397 | 2.55:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #6C3397 text on white | 8.20:1 | AAA | Lc 87.8 | Fine for body text |
| #6C3397 text on black | 2.55:1 | Fails | Lc -14.3 | 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
#F8F3FC
oklch(97.1% 0.013 310.5)
-
Step 100
100
#EFE5F8
oklch(93.5% 0.027 309.2)
-
Step 200
200
#E2D1F4
oklch(88.5% 0.051 307.2)
-
Step 300
300
#D1B1F0
oklch(81% 0.093 307.5)
-
Step 400
400
#B985E8
oklch(70.6% 0.149 307.2)
-
Step 500
500
#A862E1
oklch(63% 0.191 307.2)
-
Step 600
600
#9444CF
oklch(55.6% 0.208 307.3)
-
Step 700
700
#7E34B3
oklch(49% 0.193 307.3)
-
Step 800
800 (this color)
#6C3397
oklch(44.6% 0.16 307.3)
-
Step 900
900
#532A74
oklch(37.7% 0.125 306.9)
-
Step 950
950
#311A44
oklch(27.1% 0.078 307.2)
#6C3397 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) | #004D9A | 0.135 |
| Deuteranopia (no green cones) | #1E4F95 | 0.124 |
| Tritanopia (no blue cones) | #654860 | 0.114 |
| Achromatopsia (no color) | #4F4F4F | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C3397
#6C3397
oklch(44.6% 0.16 307.3)
- #425F00
#425F00
oklch(44.6% 0.116 127.4)
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 #6C3397, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.012
- Grape #7209B7 ΔE 0.069
- Dark Slate Blue #483D8B ΔE 0.070
- Blueberry #464196 ΔE 0.072
- Purple #800080 ΔE 0.077
- Dark Magenta #8B008B ΔE 0.080
- Chrysanthemum #560BAD ΔE 0.082
- Light Eggplant #894585 ΔE 0.083
Use #6C3397 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.