#6A378C
Closest named color: Rebecca Purple (#663399). oklch(44.2% 0.14 309.5), rgb(106, 55, 140).
Aa
White text reads best on this color (8.27:1).
About this color
#6A378C is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.140 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.026 away. White text reads best on it, at 8.27:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.140) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.53:1 |
| White text | 8.27:1 |
Values
| HEX | #6A378C |
| RGB | rgb(106, 55, 140) |
| HSL | hsl(276, 44%, 38%) |
| OKLCH | oklch(44.2% 0.14 309.5) |
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 #6A378C | 8.27:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #6A378C | 2.53:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #6A378C text on white | 8.27:1 | AAA | Lc 88.2 | Fine for body text |
| #6A378C text on black | 2.53:1 | Fails | Lc -14.0 | 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
#F8F4FB
oklch(97.2% 0.01 311.2)
-
Step 100
100
#EFE6F6
oklch(93.7% 0.023 310.7)
-
Step 200
200
#E2D1F0
oklch(88.4% 0.046 309.9)
-
Step 300
300
#D0B2E9
oklch(80.8% 0.083 309.3)
-
Step 400
400
#B988DE
oklch(70.6% 0.132 309.5)
-
Step 500
500
#A868D5
oklch(63.2% 0.168 309.5)
-
Step 600
600
#934CC2
oklch(55.6% 0.183 309.4)
-
Step 700
700
#7D3CA7
oklch(49% 0.17 309.5)
-
Step 800
800 (this color)
#6A378C
oklch(44.2% 0.14 309.5)
-
Step 900
900
#532E6C
oklch(37.8% 0.108 309.7)
-
Step 950
950
#301B40
oklch(26.9% 0.07 308.6)
#6A378C 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) | #174C8F | 0.121 |
| Deuteranopia (no green cones) | #2D4F8A | 0.107 |
| Tritanopia (no blue cones) | #65475C | 0.098 |
| Achromatopsia (no color) | #4E4E4E | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6A378C
#6A378C
oklch(44.2% 0.14 309.5)
- #3D5F00
#3D5F00
oklch(44.2% 0.118 129.7)
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 #6A378C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.026
- Dark Slate Blue #483D8B ΔE 0.062
- Blueberry #464196 ΔE 0.068
- Light Eggplant #894585 ΔE 0.075
- Twilight #4E518B ΔE 0.077
- Purple #800080 ΔE 0.079
- Warm Purple #952E8F ΔE 0.085
- Dark Magenta #8B008B ΔE 0.086
Use #6A378C 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.