#644139
Closest named color: Purple Brown (#673A3F). oklch(41.3% 0.051 33.4), rgb(100, 65, 57).
Aa
White text reads best on this color (8.90:1).
About this color
#644139 is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.051 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.025 away. White text reads best on it, at 8.90:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.051) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #644139 |
| RGB | rgb(100, 65, 57) |
| HSL | hsl(11, 27%, 31%) |
| OKLCH | oklch(41.3% 0.051 33.4) |
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 #644139 | 8.90:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #644139 | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #644139 text on white | 8.90:1 | AAA | Lc 90.3 | Preferred for body text |
| #644139 text on black | 2.35:1 | Fails | Lc -12.0 | 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
#EFE8E6
oklch(93.6% 0.008 36.6)
-
Step 200
200
#E4D5D2
oklch(88.4% 0.017 31.1)
-
Step 300
300
#D3BAB4
oklch(80.9% 0.03 33.7)
-
Step 400
400
#BC968D
oklch(70.6% 0.048 33.6)
-
Step 500
500
#AB7C72
oklch(63% 0.061 32.3)
-
Step 600
600
#96655A
oklch(55.6% 0.066 33.2)
-
Step 700
700
#80544A
oklch(49.2% 0.061 33.4)
-
Step 800
800 (this color)
#644139
oklch(41.3% 0.051 33.4)
-
Step 900
900
#553A34
oklch(37.8% 0.04 32.9)
-
Step 950
950
#32221E
oklch(27% 0.026 34.5)
#644139 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) | #494538 | 0.050 |
| Deuteranopia (no green cones) | #514C39 | 0.045 |
| Tritanopia (no blue cones) | #6C3C3F | 0.024 |
| Achromatopsia (no color) | #4A4A4A | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644139
#644139
oklch(41.3% 0.051 33.4)
- #26535C
#26535C
oklch(41.4% 0.051 212.4)
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 #644139, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.025
- Brownish Purple #76424E ΔE 0.049
- Mud Brown #60460F ΔE 0.057
- Chestnut #742802 ΔE 0.071
- Charcoal Grey #3C4142 ΔE 0.072
- Milk Chocolate #7F4E1E ΔE 0.077
- Red Brown #8B2E16 ΔE 0.084
- Green Brown #544E03 ΔE 0.085
Use #644139 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.