#644143
Closest named color: Purple Brown (#673A3F). oklch(41.6% 0.049 15.6), rgb(100, 65, 67).
Aa
White text reads best on this color (8.82:1).
About this color
#644143 is a dark, muted red. In OKLCH its lightness is 42%, its chroma 0.049 and its hue 16°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.019 away. White text reads best on it, at 8.82:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | muted (0.049) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.37:1 |
| White text | 8.82:1 |
Values
| HEX | #644143 |
| RGB | rgb(100, 65, 67) |
| HSL | hsl(357, 21%, 32%) |
| OKLCH | oklch(41.6% 0.049 15.6) |
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 #644143 | 8.82:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #644143 | 2.37:1 | Fails | Lc 13.9 | Not readable |
| #644143 text on white | 8.82:1 | AAA | Lc 90.1 | Preferred for body text |
| #644143 text on black | 2.37:1 | Fails | Lc -12.2 | 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 800.
-
Step 50
50
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#EFE8E8
oklch(93.6% 0.008 17.3)
-
Step 200
200
#E3D5D5
oklch(88.4% 0.016 17.5)
-
Step 300
300
#D3BABA
oklch(81% 0.029 17.8)
-
Step 400
400
#BC9597
oklch(70.7% 0.047 14.9)
-
Step 500
500
#AA7B7E
oklch(63% 0.059 14.6)
-
Step 600
600
#956467
oklch(55.6% 0.064 15.3)
-
Step 700
700
#7F5355
oklch(49.1% 0.059 16.5)
-
Step 800
800 (this color)
#644143
oklch(41.6% 0.049 15.6)
-
Step 900
900
#54393B
oklch(37.6% 0.039 14.2)
-
Step 950
950
#312222
oklch(27% 0.023 18.7)
#644143 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) | #474643 | 0.053 |
| Deuteranopia (no green cones) | #504D42 | 0.049 |
| Tritanopia (no blue cones) | #6B3E42 | 0.015 |
| Achromatopsia (no color) | #4A4A4A | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644143
#644143
oklch(41.6% 0.049 15.6)
- #285454
#285454
oklch(41.5% 0.049 195.4)
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 #644143, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.019
- Brownish Purple #76424E ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.072
- Mud Brown #60460F ΔE 0.072
- Chestnut #742802 ΔE 0.080
- Milk Chocolate #7F4E1E ΔE 0.086
- Dark Mauve #874C62 ΔE 0.087
- Dark Slate Gray #2F4F4F ΔE 0.088
Use #644143 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.