#81639B
Closest named color: Dark Lavender (#856798). oklch(55.2% 0.091 308.2), rgb(129, 99, 155).
Aa
White text reads best on this color (5.01:1).
About this color
#81639B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 55%, its chroma 0.091 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Lavender (#856798), ΔE 0.015 away. White text reads best on it, at 5.01:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.091) |
| Temperature | in between |
| Nearest name | Dark Lavender (#856798) |
| Black text | 4.19:1 |
| White text | 5.01:1 |
Values
| HEX | #81639B |
| RGB | rgb(129, 99, 155) |
| HSL | hsl(272, 22%, 50%) |
| OKLCH | oklch(55.2% 0.091 308.2) |
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 #81639B | 5.01:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #81639B | 4.19:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #81639B text on white | 5.01:1 | AA | Lc 74.6 | Content text, not long reading |
| #81639B text on black | 4.19:1 | AA large text | Lc -27.1 | Dividers and decoration only |
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 600.
-
Step 50
50
#F6F4F8
oklch(97% 0.006 308.4)
-
Step 100
100
#ECE8F0
oklch(93.6% 0.011 308.3)
-
Step 200
200
#DDD5E5
oklch(88.4% 0.023 308.2)
-
Step 300
300
#C8BAD5
oklch(80.9% 0.04 308.7)
-
Step 400
400
#AC96C1
oklch(70.7% 0.066 307.9)
-
Step 500
500
#987CB1
oklch(63.2% 0.084 308.2)
-
Step 600
600 (this color)
#81639B
oklch(55.2% 0.091 308.2)
-
Step 700
700
#6E5386
oklch(49.1% 0.085 307.8)
-
Step 800
800
#5A446D
oklch(42.7% 0.071 308.2)
-
Step 900
900
#4A3A58
oklch(37.8% 0.054 308.4)
-
Step 950
950
#2B2234
oklch(27% 0.035 307)
#81639B 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) | #586E9D | 0.065 |
| Deuteranopia (no green cones) | #5F7099 | 0.060 |
| Tritanopia (no blue cones) | #7E6B78 | 0.066 |
| Achromatopsia (no color) | #6F6F6F | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81639B
#81639B
oklch(55.2% 0.091 308.2)
- #627C40
#627C40
oklch(55.1% 0.091 128.3)
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 #81639B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Lavender #856798 ΔE 0.015
- Dusty Purple #825F87 ΔE 0.031
- Muted Purple #805B87 ΔE 0.034
- Grey Purple #826D8C ΔE 0.041
- Faded Purple #916E99 ΔE 0.043
- Dull Purple #84597E ΔE 0.046
- Dusky Purple #895B7B ΔE 0.050
- Deep Lavender #8D5EB7 ΔE 0.052
Use #81639B 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.