#643935
Closest named color: Purple Brown (#673A3F). oklch(39.6% 0.062 25.9), rgb(100, 57, 53).
Aa
White text reads best on this color (9.63:1).
About this color
#643935 is a dark, muted red. In OKLCH its lightness is 40%, its chroma 0.062 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.017 away. White text reads best on it, at 9.63:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | muted (0.062) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.17:1 |
| White text | 9.63:1 |
Values
| HEX | #643935 |
| RGB | rgb(100, 57, 53) |
| HSL | hsl(5, 31%, 30%) |
| OKLCH | oklch(39.6% 0.062 25.9) |
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 #643935 | 9.63:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #643935 | 2.17:1 | Fails | Lc 11.8 | Not readable |
| #643935 text on white | 9.63:1 | AAA | Lc 92.1 | Preferred for body text |
| #643935 text on black | 2.17:1 | Fails | Lc -10.3 | 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
#FAF4F3
oklch(97.2% 0.007 28.8)
-
Step 100
100
#F3E7E5
oklch(93.7% 0.013 28.9)
-
Step 200
200
#EAD3D0
oklch(88.5% 0.026 26.6)
-
Step 300
300
#DDB6B1
oklch(80.9% 0.046 26.7)
-
Step 400
400
#CB8F88
oklch(70.7% 0.074 26.5)
-
Step 500
500
#BC726B
oklch(63% 0.095 25.9)
-
Step 600
600
#A75953
oklch(55.5% 0.103 25.5)
-
Step 700
700
#8F4943
oklch(49% 0.096 26.2)
-
Step 800
800
#753C38
oklch(42.7% 0.081 25.2)
-
Step 900
900 (this color)
#643935
oklch(39.6% 0.062 25.9)
-
Step 950
950
#371F1C
oklch(27% 0.038 27.6)
#643935 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) | #423F35 | 0.064 |
| Deuteranopia (no green cones) | #4D4834 | 0.059 |
| Tritanopia (no blue cones) | #6C3338 | 0.023 |
| Achromatopsia (no color) | #454545 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643935
#643935
oklch(39.6% 0.062 25.9)
- #0F5057
#0F5057
oklch(39.6% 0.062 205.9)
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 #643935, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.017
- Brownish Purple #76424E ΔE 0.056
- Chestnut #742802 ΔE 0.059
- Mud Brown #60460F ΔE 0.068
- Charcoal Grey #3C4142 ΔE 0.073
- Red Brown #8B2E16 ΔE 0.082
- Reddy Brown #6E1005 ΔE 0.083
- Rust Brown #8B3103 ΔE 0.086
Use #643935 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.