#6A3378
Closest named color: Rebecca Purple (#663399). oklch(42.3% 0.124 319.1), rgb(106, 51, 120).
Aa
White text reads best on this color (8.90:1).
About this color
#6A3378 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.124 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.056 away. White text reads best on it, at 8.90:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #6A3378 |
| RGB | rgb(106, 51, 120) |
| HSL | hsl(288, 40%, 34%) |
| OKLCH | oklch(42.3% 0.124 319.1) |
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 #6A3378 | 8.90:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #6A3378 | 2.35:1 | Fails | Lc 14.0 | Not readable |
| #6A3378 text on white | 8.90:1 | AAA | Lc 90.0 | Fine for body text |
| #6A3378 text on black | 2.35:1 | Fails | Lc -12.3 | 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
#F8F3FA
oklch(97% 0.011 316.5)
-
Step 100
100
#F0E6F3
oklch(93.7% 0.02 318.4)
-
Step 200
200
#E5D1EA
oklch(88.5% 0.04 319.5)
-
Step 300
300
#D5B2DF
oklch(80.9% 0.073 318.6)
-
Step 400
400
#C088CE
oklch(70.6% 0.117 319.4)
-
Step 500
500
#AF69C2
oklch(63.1% 0.148 318.8)
-
Step 600
600
#9A4EAE
oklch(55.5% 0.161 318.9)
-
Step 700
700
#843E95
oklch(49.1% 0.15 319.4)
-
Step 800
800 (this color)
#6A3378
oklch(42.3% 0.124 319.1)
-
Step 900
900
#572E62
oklch(37.7% 0.098 318.8)
-
Step 950
950
#331C39
oklch(27.1% 0.06 319.1)
#6A3378 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) | #25467A | 0.116 |
| Deuteranopia (no green cones) | #374C76 | 0.103 |
| Tritanopia (no blue cones) | #6A3D50 | 0.078 |
| Achromatopsia (no color) | #4A4A4A | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6A3378
#6A3378
oklch(42.3% 0.124 319.1)
- #235D0D
#235D0D
oklch(42.3% 0.124 139.1)
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 #6A3378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.071
- Purple #800080 ΔE 0.074
- Light Eggplant #894585 ΔE 0.079
- Rich Purple #720058 ΔE 0.083
- Blueberry #464196 ΔE 0.084
- Velvet #750851 ΔE 0.085
- Twilight #4E518B ΔE 0.087
Use #6A3378 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.