#6B398E
Closest named color: Rebecca Purple (#663399). oklch(44.7% 0.14 309), rgb(107, 57, 142).
Aa
White text reads best on this color (8.07:1).
About this color
#6B398E is a dark, moderately saturated purple. In OKLCH its lightness is 45%, 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 8.07:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.140) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.60:1 |
| White text | 8.07:1 |
Values
| HEX | #6B398E |
| RGB | rgb(107, 57, 142) |
| HSL | hsl(275, 43%, 39%) |
| OKLCH | oklch(44.7% 0.14 309) |
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 #6B398E | 8.07:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #6B398E | 2.60:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #6B398E text on white | 8.07:1 | AAA | Lc 87.6 | Fine for body text |
| #6B398E text on black | 2.60:1 | Fails | Lc -14.6 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E2D2F1
oklch(88.6% 0.045 308.6)
-
Step 300
300
#D0B3E9
oklch(81% 0.081 309)
-
Step 400
400
#B889DE
oklch(70.7% 0.13 308.8)
-
Step 500
500
#A768D5
oklch(63.1% 0.168 309.1)
-
Step 600
600
#924DC2
oklch(55.6% 0.181 308.9)
-
Step 700
700
#7C3DA8
oklch(49.1% 0.169 308.5)
-
Step 800
800 (this color)
#6B398E
oklch(44.7% 0.14 309)
-
Step 900
900
#522E6D
oklch(37.7% 0.109 308.4)
-
Step 950
950
#301B40
oklch(26.9% 0.07 308.6)
#6B398E 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 | 0.119 |
| Deuteranopia (no green cones) | #2E518C | 0.106 |
| Tritanopia (no blue cones) | #66495E | 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°).
- #6B398E
#6B398E
oklch(44.7% 0.14 309)
- #3F6000
#3F6000
oklch(44.6% 0.119 129.1)
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 #6B398E, 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 0.064
- Blueberry #464196 ΔE 0.068
- Light Eggplant #894585 ΔE 0.071
- Twilight #4E518B ΔE 0.075
- Purple #800080 ΔE 0.081
- Warm Purple #952E8F ΔE 0.083
- Dark Magenta #8B008B ΔE 0.087
Use #6B398E 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.