#643955
Closest named color: Purple Brown (#673A3F). oklch(40.7% 0.073 341.4), rgb(100, 57, 85).
Aa
White text reads best on this color (9.29:1).
About this color
#643955 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.073 and its hue 341°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.038 away. White text reads best on it, at 9.29:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.25:1 |
| White text | 9.29:1 |
Values
| HEX | #643955 |
| RGB | rgb(100, 57, 85) |
| HSL | hsl(321, 27%, 31%) |
| OKLCH | oklch(40.7% 0.073 341.4) |
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 #643955 | 9.29:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #643955 | 2.25:1 | Fails | Lc 12.7 | Not readable |
| #643955 text on white | 9.29:1 | AAA | Lc 91.3 | Preferred for body text |
| #643955 text on black | 2.25:1 | Fails | Lc -11.1 | 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
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#F0E7EC
oklch(93.6% 0.012 342.6)
-
Step 200
200
#E5D3DE
oklch(88.5% 0.025 340.3)
-
Step 300
300
#D5B6C9
oklch(80.9% 0.044 340.8)
-
Step 400
400
#BF90AD
oklch(70.7% 0.069 341.5)
-
Step 500
500
#AE7499
oklch(63.1% 0.088 341.3)
-
Step 600
600
#995C83
oklch(55.6% 0.095 341.8)
-
Step 700
700
#824C6F
oklch(49.1% 0.087 341.5)
-
Step 800
800 (this color)
#643955
oklch(40.7% 0.073 341.4)
-
Step 900
900
#56354A
oklch(37.6% 0.057 341.6)
-
Step 950
950
#331F2C
oklch(27% 0.038 340.7)
#643955 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) | #3B4356 | 0.075 |
| Deuteranopia (no green cones) | #464954 | 0.068 |
| Tritanopia (no blue cones) | #693943 | 0.032 |
| Achromatopsia (no color) | #474747 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643955
#643955
oklch(40.7% 0.073 341.4)
- #1D563D
#1D563D
oklch(40.8% 0.073 161.4)
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 #643955, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.038
- Brownish Purple #76424E ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.085
- Grape Purple #5D1451 ΔE 0.086
- Velvet #750851 ΔE 0.086
- Dusty Grape #545775 ΔE 0.088
- Dark Mauve #874C62 ΔE 0.089
- Red Purple #820747 ΔE 0.090
Use #643955 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.