#643545
Closest named color: Purple Brown (#673A3F). oklch(39.4% 0.07 359.1), rgb(100, 53, 69).
Aa
White text reads best on this color (9.82:1).
About this color
#643545 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.070 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.021 away. White text reads best on it, at 9.82:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.070) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.13:1 |
| White text | 9.82:1 |
Values
| HEX | #643545 |
| RGB | rgb(100, 53, 69) |
| HSL | hsl(340, 31%, 30%) |
| OKLCH | oklch(39.4% 0.07 359.1) |
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 #643545 | 9.82:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #643545 | 2.13:1 | Fails | Lc 11.4 | Not readable |
| #643545 text on white | 9.82:1 | AAA | Lc 92.6 | Preferred for body text |
| #643545 text on black | 2.13:1 | Fails | Lc -9.9 | 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
#FAF4F5
oklch(97.2% 0.007 5.6)
-
Step 100
100
#F3E6E9
oklch(93.6% 0.015 1.6)
-
Step 200
200
#EBD2D8
oklch(88.6% 0.029 1.4)
-
Step 300
300
#DEB3C0
oklch(80.9% 0.052 358.3)
-
Step 400
400
#CC8B9F
oklch(70.7% 0.083 359.4)
-
Step 500
500
#BE6C88
oklch(63.1% 0.109 358.8)
-
Step 600
600
#A95372
oklch(55.6% 0.118 358.8)
-
Step 700
700
#90435F
oklch(49% 0.109 358.9)
-
Step 800
800
#75384E
oklch(42.7% 0.089 358.7)
-
Step 900
900 (this color)
#643545
oklch(39.4% 0.07 359.1)
-
Step 950
950
#381D26
oklch(27.1% 0.044 359.1)
#643545 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) | #3C3E46 | 0.076 |
| Deuteranopia (no green cones) | #474744 | 0.072 |
| Tritanopia (no blue cones) | #6B323B | 0.020 |
| Achromatopsia (no color) | #434343 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643545
#643545
oklch(39.4% 0.07 359.1)
- #055247
#055247
oklch(39.4% 0.07 179.5)
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 #643545, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.021
- Brownish Purple #76424E ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.079
- Chestnut #742802 ΔE 0.080
- Merlot #730039 ΔE 0.083
- Bordeaux #7B002C ΔE 0.084
- Wine Red #7B0323 ΔE 0.085
- Grape Purple #5D1451 ΔE 0.086
Use #643545 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.