#6C1B9E
Closest named color: Rebecca Purple (#663399). oklch(42.6% 0.194 307.7), rgb(108, 27, 158).
Aa
White text reads best on this color (9.17:1).
About this color
#6C1B9E is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.194 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.039 away. White text reads best on it, at 9.17:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.194) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.28:1 |
| White text | 9.17:1 |
Values
| HEX | #6C1B9E |
| RGB | rgb(108, 27, 158) |
| HSL | hsl(277, 71%, 36%) |
| OKLCH | oklch(42.6% 0.194 307.7) |
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 #6C1B9E | 9.17:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #6C1B9E | 2.28:1 | Fails | Lc 14.1 | Not readable |
| #6C1B9E text on white | 9.17:1 | AAA | Lc 89.9 | Fine for body text |
| #6C1B9E text on black | 2.28:1 | Fails | Lc -12.4 | 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
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#F0E4FB
oklch(93.5% 0.033 309)
-
Step 200
200
#E4CFFA
oklch(88.5% 0.062 307.2)
-
Step 300
300
#D5ADFA
oklch(81% 0.114 307.8)
-
Step 400
400
#C07DF7
oklch(70.8% 0.182 307.8)
-
Step 500
500
#B053F3
oklch(63.1% 0.233 307.7)
-
Step 600
600
#9C2CE1
oklch(55.6% 0.252 307.8)
-
Step 700
700
#851AC4
oklch(49.1% 0.235 307.5)
-
Step 800
800 (this color)
#6C1B9E
oklch(42.6% 0.194 307.7)
-
Step 900
900
#58207E
oklch(37.8% 0.152 307.8)
-
Step 950
950
#33154A
oklch(27% 0.096 307.1)
#6C1B9E 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) | #0045A1 | 0.150 |
| Deuteranopia (no green cones) | #00489B | 0.152 |
| Tritanopia (no blue cones) | #643E5E | 0.133 |
| Achromatopsia (no color) | #484848 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C1B9E
#6C1B9E
oklch(42.6% 0.194 307.7)
- #3D5900
#3D5900
oklch(42.6% 0.111 127.7)
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 #6C1B9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.039
- Grape #7209B7 ΔE 0.042
- Chrysanthemum #560BAD ΔE 0.058
- Purple #800080 ΔE 0.070
- Dark Magenta #8B008B ΔE 0.075
- Imperial Purple #480CA8 ΔE 0.082
- Purple Blue #5D21D0 ΔE 0.090
- Indigo #4B0082 ΔE 0.091
Use #6C1B9E 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.