#643F46
Closest named color: Purple Brown (#673A3F). oklch(41.3% 0.053 7.3), rgb(100, 63, 70).
Aa
White text reads best on this color (8.96:1).
About this color
#643F46 is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.053 and its hue 7°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.015 away. White text reads best on it, at 8.96:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.053) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.34:1 |
| White text | 8.96:1 |
Values
| HEX | #643F46 |
| RGB | rgb(100, 63, 70) |
| HSL | hsl(349, 23%, 32%) |
| OKLCH | oklch(41.3% 0.053 7.3) |
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 #643F46 | 8.96:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #643F46 | 2.34:1 | Fails | Lc 13.5 | Not readable |
| #643F46 text on white | 8.96:1 | AAA | Lc 90.5 | Preferred for body text |
| #643F46 text on black | 2.34:1 | Fails | Lc -11.8 | 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 800.
-
Step 50
50
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#F0E7E9
oklch(93.6% 0.01 2)
-
Step 200
200
#E4D5D7
oklch(88.6% 0.017 8.2)
-
Step 300
300
#D3B9BD
oklch(80.9% 0.03 7.3)
-
Step 400
400
#BD949B
oklch(70.7% 0.05 7)
-
Step 500
500
#AB7A83
oklch(63.1% 0.062 6.9)
-
Step 600
600
#96626C
oklch(55.5% 0.069 7)
-
Step 700
700
#80515A
oklch(49% 0.064 7.2)
-
Step 800
800 (this color)
#643F46
oklch(41.3% 0.053 7.3)
-
Step 900
900
#55383E
oklch(37.6% 0.042 5.7)
-
Step 950
950
#322124
oklch(27% 0.027 7.3)
#643F46 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) | #454546 | 0.057 |
| Deuteranopia (no green cones) | #4E4C45 | 0.053 |
| Tritanopia (no blue cones) | #6A3C41 | 0.014 |
| Achromatopsia (no color) | #494949 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643F46
#643F46
oklch(41.3% 0.053 7.3)
- #255450
#255450
oklch(41.2% 0.052 188)
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 #643F46, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.015
- Brownish Purple #76424E ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.072
- Mud Brown #60460F ΔE 0.081
- Chestnut #742802 ΔE 0.082
- Dark Mauve #874C62 ΔE 0.087
- Dusty Grape #545775 ΔE 0.088
- Dark Slate Gray #2F4F4F ΔE 0.091
Use #643F46 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.