#643143
Closest named color: Purple Brown (#673A3F). oklch(38.6% 0.077 358.9), rgb(100, 49, 67).
Aa
White text reads best on this color (10.18:1).
About this color
#643143 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.077 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.029 away. White text reads best on it, at 10.18:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.06:1 |
| White text | 10.18:1 |
Values
| HEX | #643143 |
| RGB | rgb(100, 49, 67) |
| HSL | hsl(339, 34%, 29%) |
| OKLCH | oklch(38.6% 0.077 358.9) |
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 #643143 | 10.18:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #643143 | 2.06:1 | Fails | Lc 10.6 | Not readable |
| #643143 text on white | 10.18:1 | AAA | Lc 93.3 | Preferred for body text |
| #643143 text on black | 2.06:1 | Fails | Lc -9.2 | 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
#FAF3F5
oklch(97% 0.008 357.8)
-
Step 100
100
#F4E5E9
oklch(93.5% 0.017 359.3)
-
Step 200
200
#ECD1D9
oklch(88.5% 0.032 357.9)
-
Step 300
300
#E1B2C0
oklch(81% 0.057 358.8)
-
Step 400
400
#D0889F
oklch(70.7% 0.092 359)
-
Step 500
500
#C26988
oklch(63.1% 0.118 358.8)
-
Step 600
600
#AD4F72
oklch(55.6% 0.128 358.7)
-
Step 700
700
#94405F
oklch(49.1% 0.118 359.2)
-
Step 800
800
#78354E
oklch(42.7% 0.098 358.6)
-
Step 900
900 (this color)
#643143
oklch(38.6% 0.077 358.9)
-
Step 950
950
#391C26
oklch(27% 0.048 358.7)
#643143 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) | #393B44 | 0.083 |
| Deuteranopia (no green cones) | #464542 | 0.077 |
| Tritanopia (no blue cones) | #6B2E38 | 0.022 |
| Achromatopsia (no color) | #414141 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643143
#643143
oklch(38.6% 0.077 358.9)
- #005044
#005044
oklch(38.6% 0.071 178.2)
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 #643143, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.029
- Brownish Purple #76424E ΔE 0.060
- Merlot #730039 ΔE 0.074
- Bordeaux #7B002C ΔE 0.077
- Grape Purple #5D1451 ΔE 0.078
- Wine Red #7B0323 ΔE 0.078
- Chestnut #742802 ΔE 0.079
- Velvet #750851 ΔE 0.080
Use #643143 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.