#6B3488
Closest named color: Rebecca Purple (#663399). oklch(43.6% 0.141 312.2), rgb(107, 52, 136).
Aa
White text reads best on this color (8.49:1).
About this color
#6B3488 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.141 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 0.031 away. White text reads best on it, at 8.49:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.47:1 |
| White text | 8.49:1 |
Values
| HEX | #6B3488 |
| RGB | rgb(107, 52, 136) |
| HSL | hsl(279, 45%, 37%) |
| OKLCH | oklch(43.6% 0.141 312.2) |
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 #6B3488 | 8.49:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #6B3488 | 2.47:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #6B3488 text on white | 8.49:1 | AAA | Lc 88.8 | Fine for body text |
| #6B3488 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
#EFE6F6
oklch(93.7% 0.023 310.7)
-
Step 200
200
#E3D1EF
oklch(88.4% 0.045 312)
-
Step 300
300
#D3B2E7
oklch(81% 0.081 312.5)
-
Step 400
400
#BC87DC
oklch(70.7% 0.132 312)
-
Step 500
500
#AB66D2
oklch(63% 0.169 312)
-
Step 600
600
#974ABF
oklch(55.6% 0.184 312.3)
-
Step 700
700
#803BA4
oklch(49.1% 0.169 312.1)
-
Step 800
800 (this color)
#6B3488
oklch(43.6% 0.141 312.2)
-
Step 900
900
#552D6B
oklch(37.8% 0.109 312.1)
-
Step 950
950
#321B3F
oklch(27.1% 0.07 312.1)
#6B3488 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) | #164A8B | 0.126 |
| Deuteranopia (no green cones) | #2E4E86 | 0.111 |
| Tritanopia (no blue cones) | #684359 | 0.095 |
| Achromatopsia (no color) | #4D4D4D | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B3488
#6B3488
oklch(43.6% 0.141 312.2)
- #365E00
#365E00
oklch(43.5% 0.121 132.2)
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 #6B3488, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.031
- Dark Slate Blue #483D8B ΔE 0.066
- Purple #800080 ΔE 0.072
- Blueberry #464196 ΔE 0.073
- Light Eggplant #894585 ΔE 0.076
- Dark Magenta #8B008B ΔE 0.081
- Twilight #4E518B ΔE 0.083
- Warm Purple #952E8F ΔE 0.084
Use #6B3488 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.