#6B398B
Closest named color: Rebecca Purple (#663399). oklch(44.5% 0.136 310.1), rgb(107, 57, 139).
Aa
White text reads best on this color (8.12:1).
About this color
#6B398B is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.136 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 0.030 away. White text reads best on it, at 8.12:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.58:1 |
| White text | 8.12:1 |
Values
| HEX | #6B398B |
| RGB | rgb(107, 57, 139) |
| HSL | hsl(277, 42%, 38%) |
| OKLCH | oklch(44.5% 0.136 310.1) |
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 #6B398B | 8.12:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #6B398B | 2.58:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #6B398B text on white | 8.12:1 | AAA | Lc 87.7 | Fine for body text |
| #6B398B text on black | 2.58:1 | Fails | Lc -14.4 | 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
#E2D2F0
oklch(88.6% 0.044 309.3)
-
Step 300
300
#D1B3E8
oklch(81% 0.08 310.2)
-
Step 400
400
#B989DC
oklch(70.7% 0.128 310)
-
Step 500
500
#A869D2
oklch(63.2% 0.163 310.2)
-
Step 600
600
#934EBF
oklch(55.7% 0.177 310)
-
Step 700
700
#7D3EA5
oklch(49.2% 0.164 309.9)
-
Step 800
800 (this color)
#6B398B
oklch(44.5% 0.136 310.1)
-
Step 900
900
#532E6B
oklch(37.7% 0.107 310.3)
-
Step 950
950
#301C3F
oklch(27% 0.067 309)
#6B398B 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) | #1D4D8E | 0.117 |
| Deuteranopia (no green cones) | #315089 | 0.103 |
| Tritanopia (no blue cones) | #67485C | 0.095 |
| Achromatopsia (no color) | #4F4F4F | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B398B
#6B398B
oklch(44.5% 0.136 310.1)
- #3D6000
#3D6000
oklch(44.5% 0.12 130)
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 #6B398B, 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 0.064
- Blueberry #464196 ΔE 0.069
- Light Eggplant #894585 ΔE 0.070
- Twilight #4E518B ΔE 0.074
- Purple #800080 ΔE 0.081
- Warm Purple #952E8F ΔE 0.083
- Dusk #4E5481 ΔE 0.086
Use #6B398B 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.