#6C338C
Closest named color: Rebecca Purple (#663399). oklch(43.8% 0.147 311.3), rgb(108, 51, 140).
Aa
White text reads best on this color (8.43:1).
About this color
#6C338C is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.147 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.025 away. White text reads best on it, at 8.43:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.48:1 |
| White text | 8.43:1 |
Values
| HEX | #6C338C |
| RGB | rgb(108, 51, 140) |
| HSL | hsl(278, 47%, 37%) |
| OKLCH | oklch(43.8% 0.147 311.3) |
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 #6C338C | 8.43:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #6C338C | 2.48:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #6C338C text on white | 8.43:1 | AAA | Lc 88.5 | Fine for body text |
| #6C338C text on black | 2.48:1 | Fails | Lc -13.6 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE5F6
oklch(93.5% 0.025 311.7)
-
Step 200
200
#E3D1F1
oklch(88.5% 0.047 310.5)
-
Step 300
300
#D3B1EA
oklch(80.9% 0.087 311.4)
-
Step 400
400
#BC86DF
oklch(70.6% 0.138 311.1)
-
Step 500
500
#AC64D6
oklch(63.1% 0.177 311.5)
-
Step 600
600
#9748C3
oklch(55.6% 0.191 311.3)
-
Step 700
700
#8138A8
oklch(49.1% 0.178 311.6)
-
Step 800
800 (this color)
#6C338C
oklch(43.8% 0.147 311.3)
-
Step 900
900
#552B6D
oklch(37.6% 0.115 311.5)
-
Step 950
950
#321A40
oklch(27% 0.073 311.6)
#6C338C 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) | #0D4A8F | 0.132 |
| Deuteranopia (no green cones) | #2B4E8A | 0.116 |
| Tritanopia (no blue cones) | #68445A | 0.102 |
| Achromatopsia (no color) | #4D4D4D | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C338C
#6C338C
oklch(43.8% 0.147 311.3)
- #395F00
#395F00
oklch(44% 0.121 131.3)
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 #6C338C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.025
- Dark Slate Blue #483D8B ΔE 0.068
- Purple #800080 ΔE 0.070
- Blueberry #464196 ΔE 0.074
- Light Eggplant #894585 ΔE 0.077
- Dark Magenta #8B008B ΔE 0.078
- Warm Purple #952E8F ΔE 0.082
- Grape #7209B7 ΔE 0.085
Use #6C338C 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.