#6D378B
Closest named color: Rebecca Purple (#663399). oklch(44.5% 0.14 311.7), rgb(109, 55, 139).
Aa
White text reads best on this color (8.17:1).
About this color
#6D378B is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.140 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.030 away. White text reads best on it, at 8.17:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.140) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.56:1 |
| White text | 8.17:1 |
Values
| HEX | #6D378B |
| RGB | rgb(109, 55, 139) |
| HSL | hsl(279, 43%, 38%) |
| OKLCH | oklch(44.5% 0.14 311.7) |
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 #6D378B | 8.17:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #6D378B | 2.56:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #6D378B text on white | 8.17:1 | AAA | Lc 87.8 | Fine for body text |
| #6D378B text on black | 2.56:1 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE6F6
oklch(93.7% 0.023 310.7)
-
Step 200
200
#E3D1F0
oklch(88.5% 0.046 311.2)
-
Step 300
300
#D2B2E8
oklch(80.9% 0.082 311.3)
-
Step 400
400
#BC88DC
oklch(70.8% 0.131 311.8)
-
Step 500
500
#AB67D2
oklch(63.2% 0.167 311.8)
-
Step 600
600
#964BBF
oklch(55.6% 0.182 311.7)
-
Step 700
700
#803BA5
oklch(49.1% 0.17 311.7)
-
Step 800
800 (this color)
#6D378B
oklch(44.5% 0.14 311.7)
-
Step 900
900
#542D6B
oklch(37.7% 0.109 311.3)
-
Step 950
950
#311B3F
oklch(27% 0.069 310.8)
#6D378B 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) | #1A4C8E | 0.124 |
| Deuteranopia (no green cones) | #315089 | 0.109 |
| Tritanopia (no blue cones) | #6A465B | 0.096 |
| Achromatopsia (no color) | #4F4F4F | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D378B
#6D378B
oklch(44.5% 0.14 311.7)
- #396100
#396100
oklch(44.5% 0.123 131.8)
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 #6D378B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.030
- Dark Slate Blue #483D8B ΔE 0.068
- Light Eggplant #894585 ΔE 0.069
- Blueberry #464196 ΔE 0.073
- Purple #800080 ΔE 0.075
- Warm Purple #952E8F ΔE 0.079
- Twilight #4E518B ΔE 0.080
- Dark Magenta #8B008B ΔE 0.082
Use #6D378B 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.