#6C3888
Closest named color: Rebecca Purple (#663399). oklch(44.3% 0.135 312.2), rgb(108, 56, 136).
Aa
White text reads best on this color (8.20:1).
About this color
#6C3888 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.135 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 0.034 away. White text reads best on it, at 8.20:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.135) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.55:1 |
| White text | 8.20:1 |
Values
| HEX | #6C3888 |
| RGB | rgb(108, 56, 136) |
| HSL | hsl(279, 42%, 38%) |
| OKLCH | oklch(44.3% 0.135 312.2) |
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 #6C3888 | 8.20:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #6C3888 | 2.55:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #6C3888 text on white | 8.20:1 | AAA | Lc 88.0 | Fine for body text |
| #6C3888 text on black | 2.55:1 | Fails | Lc -14.2 | 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
#EFE6F5
oklch(93.6% 0.022 312.2)
-
Step 200
200
#E3D1EF
oklch(88.4% 0.045 312)
-
Step 300
300
#D2B2E6
oklch(80.8% 0.08 312.3)
-
Step 400
400
#BB89D9
oklch(70.8% 0.125 312.1)
-
Step 500
500
#AA68CF
oklch(63.1% 0.162 312.2)
-
Step 600
600
#954DBC
oklch(55.6% 0.176 312)
-
Step 700
700
#7F3DA2
oklch(49.1% 0.163 312)
-
Step 800
800 (this color)
#6C3888
oklch(44.3% 0.135 312.2)
-
Step 900
900
#542E69
oklch(37.7% 0.105 312.1)
-
Step 950
950
#311B3E
oklch(26.9% 0.068 311.6)
#6C3888 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) | #1F4C8B | 0.118 |
| Deuteranopia (no green cones) | #335086 | 0.104 |
| Tritanopia (no blue cones) | #69465A | 0.092 |
| Achromatopsia (no color) | #4F4F4F | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C3888
#6C3888
oklch(44.3% 0.135 312.2)
- #386000
#386000
oklch(44.2% 0.123 132)
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 #6C3888, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.034
- Dark Slate Blue #483D8B ΔE 0.066
- Light Eggplant #894585 ΔE 0.069
- Blueberry #464196 ΔE 0.072
- Twilight #4E518B ΔE 0.077
- Purple #800080 ΔE 0.077
- Warm Purple #952E8F ΔE 0.081
- Dark Magenta #8B008B ΔE 0.085
Use #6C3888 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.