#644343
Closest named color: Purple Brown (#673A3F). oklch(42% 0.046 19.2), rgb(100, 67, 67).
Aa
White text reads best on this color (8.65:1).
About this color
#644343 is a dark, muted red. In OKLCH its lightness is 42%, its chroma 0.046 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.024 away. White text reads best on it, at 8.65:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | muted (0.046) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.42:1 |
| White text | 8.65:1 |
Values
| HEX | #644343 |
| RGB | rgb(100, 67, 67) |
| HSL | hsl(0, 20%, 33%) |
| OKLCH | oklch(42% 0.046 19.2) |
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 #644343 | 8.65:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #644343 | 2.42:1 | Fails | Lc 14.4 | Not readable |
| #644343 text on white | 8.65:1 | AAA | Lc 89.6 | Fine for body text |
| #644343 text on black | 2.42:1 | Fails | Lc -12.6 | 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
#D2BABA
oklch(80.9% 0.027 17.7)
-
Step 400
400
#BA9696
oklch(70.6% 0.043 18.2)
-
Step 500
500
#A87C7C
oklch(63% 0.055 18.7)
-
Step 600
600
#936565
oklch(55.5% 0.06 19.1)
-
Step 700
700
#7D5454
oklch(49.1% 0.055 19.2)
-
Step 800
800 (this color)
#644343
oklch(42% 0.046 19.2)
-
Step 900
900
#533A3A
oklch(37.7% 0.036 18.9)
-
Step 950
950
#312222
oklch(27% 0.023 18.7)
#644343 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) | #494843 | 0.049 |
| Deuteranopia (no green cones) | #514E42 | 0.046 |
| Tritanopia (no blue cones) | #6B4043 | 0.015 |
| Achromatopsia (no color) | #4B4B4B | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644343
#644343
oklch(42% 0.046 19.2)
- #2C5557
#2C5557
oklch(42.1% 0.046 199.7)
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 #644343, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.024
- Brownish Purple #76424E ΔE 0.040
- Mud Brown #60460F ΔE 0.069
- Charcoal Grey #3C4142 ΔE 0.072
- Milk Chocolate #7F4E1E ΔE 0.082
- Chestnut #742802 ΔE 0.082
- Dark Slate Gray #2F4F4F ΔE 0.085
- Dusty Grape #545775 ΔE 0.086
Use #644343 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.