#6A3788
Closest named color: Rebecca Purple (#663399). oklch(43.9% 0.136 311.1), rgb(106, 55, 136).
Aa
White text reads best on this color (8.35:1).
About this color
#6A3788 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.136 and its hue 311°. 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 8.35:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #6A3788 |
| RGB | rgb(106, 55, 136) |
| HSL | hsl(278, 42%, 37%) |
| OKLCH | oklch(43.9% 0.136 311.1) |
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 #6A3788 | 8.35:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #6A3788 | 2.51:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #6A3788 text on white | 8.35:1 | AAA | Lc 88.4 | Fine for body text |
| #6A3788 text on black | 2.51:1 | Fails | Lc -13.8 | 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
#D1B3E7
oklch(81% 0.079 310.7)
-
Step 400
400
#BA89DA
oklch(70.7% 0.126 311.2)
-
Step 500
500
#A969D0
oklch(63.2% 0.161 311.3)
-
Step 600
600
#944DBD
oklch(55.5% 0.176 311.2)
-
Step 700
700
#7E3DA3
oklch(49% 0.164 311.2)
-
Step 800
800 (this color)
#6A3788
oklch(43.9% 0.136 311.1)
-
Step 900
900
#532E6A
oklch(37.6% 0.106 310.8)
-
Step 950
950
#311C3E
oklch(27.1% 0.066 311.2)
#6A3788 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) | #1C4B8B | 0.118 |
| Deuteranopia (no green cones) | #304F86 | 0.105 |
| Tritanopia (no blue cones) | #66465A | 0.094 |
| Achromatopsia (no color) | #4E4E4E | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6A3788
#6A3788
oklch(43.9% 0.136 311.1)
- #395F00
#395F00
oklch(44% 0.121 131.3)
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 #6A3788, 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 0.063
- Blueberry #464196 ΔE 0.070
- Light Eggplant #894585 ΔE 0.074
- Twilight #4E518B ΔE 0.077
- Purple #800080 ΔE 0.078
- Warm Purple #952E8F ΔE 0.085
- Dark Magenta #8B008B ΔE 0.086
Use #6A3788 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.