#6A3587
Closest named color: Rebecca Purple (#663399). oklch(43.5% 0.138 311.9), rgb(106, 53, 135).
Aa
White text reads best on this color (8.49:1).
About this color
#6A3587 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.138 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 0.032 away. White text reads best on it, at 8.49:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.47:1 |
| White text | 8.49:1 |
Values
| HEX | #6A3587 |
| RGB | rgb(106, 53, 135) |
| HSL | hsl(279, 44%, 37%) |
| OKLCH | oklch(43.5% 0.138 311.9) |
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 #6A3587 | 8.49:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #6A3587 | 2.47:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #6A3587 text on white | 8.49:1 | AAA | Lc 88.8 | Fine for body text |
| #6A3587 text on black | 2.47:1 | Fails | Lc -13.4 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE6F5
oklch(93.6% 0.022 312.2)
-
Step 200
200
#E3D1EF
oklch(88.4% 0.045 312)
-
Step 300
300
#D2B2E7
oklch(80.9% 0.081 311.8)
-
Step 400
400
#BB88DB
oklch(70.7% 0.129 311.6)
-
Step 500
500
#AA68D0
oklch(63.1% 0.163 311.9)
-
Step 600
600
#954CBD
oklch(55.5% 0.178 311.8)
-
Step 700
700
#7F3CA3
oklch(49% 0.166 311.8)
-
Step 800
800 (this color)
#6A3587
oklch(43.5% 0.138 311.9)
-
Step 900
900
#542D6A
oklch(37.6% 0.108 311.8)
-
Step 950
950
#311B3E
oklch(26.9% 0.068 311.6)
#6A3587 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) | #194A8A | 0.122 |
| Deuteranopia (no green cones) | #2F4E85 | 0.108 |
| Tritanopia (no blue cones) | #674459 | 0.094 |
| Achromatopsia (no color) | #4D4D4D | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6A3587
#6A3587
oklch(43.5% 0.138 311.9)
- #375E00
#375E00
oklch(43.6% 0.121 131.9)
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 #6A3587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.064
- Blueberry #464196 ΔE 0.071
- Purple #800080 ΔE 0.074
- Light Eggplant #894585 ΔE 0.076
- Twilight #4E518B ΔE 0.080
- Dark Magenta #8B008B ΔE 0.084
- Warm Purple #952E8F ΔE 0.086
Use #6A3587 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.