#643342
Closest named color: Purple Brown (#673A3F). oklch(38.9% 0.073 1.5), rgb(100, 51, 66).
Aa
White text reads best on this color (10.02:1).
About this color
#643342 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.073 and its hue 1°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.023 away. White text reads best on it, at 10.02:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.09:1 |
| White text | 10.02:1 |
Values
| HEX | #643342 |
| RGB | rgb(100, 51, 66) |
| HSL | hsl(342, 32%, 30%) |
| OKLCH | oklch(38.9% 0.073 1.5) |
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 #643342 | 10.02:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #643342 | 2.09:1 | Fails | Lc 10.9 | Not readable |
| #643342 text on white | 10.02:1 | AAA | Lc 93.0 | Preferred for body text |
| #643342 text on black | 2.09:1 | Fails | Lc -9.5 | 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
#F4E6E9
oklch(93.7% 0.016 2.7)
-
Step 200
200
#EBD1D8
oklch(88.4% 0.03 359.6)
-
Step 300
300
#E0B3BE
oklch(81% 0.054 2)
-
Step 400
400
#CE8A9D
oklch(70.7% 0.086 1.3)
-
Step 500
500
#C06B85
oklch(63.1% 0.112 1.2)
-
Step 600
600
#AB526E
oklch(55.6% 0.12 1.9)
-
Step 700
700
#93425C
oklch(49.2% 0.112 1.9)
-
Step 800
800
#77374B
oklch(42.7% 0.092 2)
-
Step 900
900 (this color)
#643342
oklch(38.9% 0.073 1.5)
-
Step 950
950
#391C25
oklch(27% 0.047 0.9)
#643342 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) | #3B3D42 | 0.079 |
| Deuteranopia (no green cones) | #474641 | 0.074 |
| Tritanopia (no blue cones) | #6B2F38 | 0.020 |
| Achromatopsia (no color) | #424242 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643342
#643342
oklch(38.9% 0.073 1.5)
- #005147
#005147
oklch(39% 0.07 180.9)
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 #643342, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.023
- Brownish Purple #76424E ΔE 0.057
- Chestnut #742802 ΔE 0.076
- Merlot #730039 ΔE 0.079
- Bordeaux #7B002C ΔE 0.080
- Wine Red #7B0323 ΔE 0.081
- Charcoal Grey #3C4142 ΔE 0.081
- Wine #80013F ΔE 0.084
Use #643342 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.