#6C398E
Closest named color: Rebecca Purple (#663399). oklch(44.8% 0.14 309.6), rgb(108, 57, 142).
Aa
White text reads best on this color (8.03:1).
About this color
#6C398E is a dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.140 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.027 away. White text reads best on it, at 8.03:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | vivid (0.140) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #6C398E |
| RGB | rgb(108, 57, 142) |
| HSL | hsl(276, 43%, 39%) |
| OKLCH | oklch(44.8% 0.14 309.6) |
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 #6C398E | 8.03:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #6C398E | 2.61:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #6C398E text on white | 8.03:1 | AAA | Lc 87.4 | Fine for body text |
| #6C398E text on black | 2.61:1 | Fails | Lc -14.7 | 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
#D1B2E9
oklch(80.9% 0.083 310.1)
-
Step 400
400
#B988DE
oklch(70.6% 0.132 309.5)
-
Step 500
500
#A868D4
oklch(63.1% 0.167 309.8)
-
Step 600
600
#934CC1
oklch(55.5% 0.182 309.7)
-
Step 700
700
#7D3CA7
oklch(49% 0.17 309.5)
-
Step 800
800 (this color)
#6C398E
oklch(44.8% 0.14 309.6)
-
Step 900
900
#532E6C
oklch(37.8% 0.108 309.7)
-
Step 950
950
#311B3F
oklch(27% 0.069 310.8)
#6C398E 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) | #1A4E91 | 0.120 |
| Deuteranopia (no green cones) | #2F518C | 0.107 |
| Tritanopia (no blue cones) | #67495E | 0.098 |
| Achromatopsia (no color) | #505050 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C398E
#6C398E
oklch(44.8% 0.14 309.6)
- #3F6100
#3F6100
oklch(44.9% 0.12 129.4)
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 #6C398E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.027
- Dark Slate Blue #483D8B ΔE 0.066
- Blueberry #464196 ΔE 0.069
- Light Eggplant #894585 ΔE 0.070
- Twilight #4E518B ΔE 0.076
- Purple #800080 ΔE 0.081
- Warm Purple #952E8F ΔE 0.081
- Dark Magenta #8B008B ΔE 0.086
Use #6C398E 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.