#643057
Closest named color: Purple Brown (#673A3F). oklch(39.2% 0.092 337.5), rgb(100, 48, 87).
Aa
White text reads best on this color (9.98:1).
About this color
#643057 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.092 and its hue 338°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.056 away. White text reads best on it, at 9.98:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.10:1 |
| White text | 9.98:1 |
Values
| HEX | #643057 |
| RGB | rgb(100, 48, 87) |
| HSL | hsl(315, 35%, 29%) |
| OKLCH | oklch(39.2% 0.092 337.5) |
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 #643057 | 9.98:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #643057 | 2.10:1 | Fails | Lc 11.1 | Not readable |
| #643057 text on white | 9.98:1 | AAA | Lc 92.9 | Preferred for body text |
| #643057 text on black | 2.10:1 | Fails | Lc -9.6 | 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 900.
-
Step 50
50
#FAF3F8
oklch(97.1% 0.01 335.5)
-
Step 100
100
#F3E5EF
oklch(93.6% 0.02 335.7)
-
Step 200
200
#EBD0E2
oklch(88.5% 0.038 338.1)
-
Step 300
300
#DFB0D1
oklch(80.9% 0.07 337.3)
-
Step 400
400
#CD85B9
oklch(70.7% 0.111 337.6)
-
Step 500
500
#BE65A8
oklch(63.1% 0.141 337.2)
-
Step 600
600
#A94A93
oklch(55.6% 0.153 337.3)
-
Step 700
700
#913A7D
oklch(49.1% 0.143 337.5)
-
Step 800
800
#763166
oklch(42.8% 0.118 337.3)
-
Step 900
900 (this color)
#643057
oklch(39.2% 0.092 337.5)
-
Step 950
950
#381A30
oklch(26.9% 0.058 338)
#643057 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) | #313D58 | 0.095 |
| Deuteranopia (no green cones) | #404556 | 0.084 |
| Tritanopia (no blue cones) | #69323F | 0.045 |
| Achromatopsia (no color) | #424242 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643057
#643057
oklch(39.2% 0.092 337.5)
- #015431
#015431
oklch(39.3% 0.093 157.2)
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 #643057, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.056
- Grape Purple #5D1451 ΔE 0.062
- Velvet #750851 ΔE 0.065
- Brownish Purple #76424E ΔE 0.069
- Rich Purple #720058 ΔE 0.072
- Red Purple #820747 ΔE 0.078
- Merlot #730039 ΔE 0.078
- Wine #80013F ΔE 0.081
Use #643057 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.