#644036
Closest named color: Purple Brown (#673A3F). oklch(41% 0.053 36.2), rgb(100, 64, 54).
Aa
White text reads best on this color (9.01:1).
About this color
#644036 is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.053 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.026 away. White text reads best on it, at 9.01:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.053) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #644036 |
| RGB | rgb(100, 64, 54) |
| HSL | hsl(13, 30%, 30%) |
| OKLCH | oklch(41% 0.053 36.2) |
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 #644036 | 9.01:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #644036 | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #644036 text on white | 9.01:1 | AAA | Lc 90.6 | Preferred for body text |
| #644036 text on black | 2.32:1 | Fails | Lc -11.7 | 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
#F8F4F3
oklch(97% 0.005 34.3)
-
Step 100
100
#F0E8E6
oklch(93.7% 0.009 34.3)
-
Step 200
200
#E4D5D1
oklch(88.4% 0.018 35.3)
-
Step 300
300
#D4BAB3
oklch(80.9% 0.031 35.5)
-
Step 400
400
#BD968B
oklch(70.6% 0.05 36.3)
-
Step 500
500
#AC7C6F
oklch(63.1% 0.063 35.7)
-
Step 600
600
#976557
oklch(55.6% 0.069 36.3)
-
Step 700
700
#815347
oklch(49% 0.065 35.3)
-
Step 800
800 (this color)
#644036
oklch(41% 0.053 36.2)
-
Step 900
900
#553A32
oklch(37.7% 0.041 37.2)
-
Step 950
950
#32221D
oklch(27% 0.026 38.1)
#644036 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) | #494435 | 0.050 |
| Deuteranopia (no green cones) | #514C36 | 0.048 |
| Tritanopia (no blue cones) | #6C3B3D | 0.025 |
| Achromatopsia (no color) | #494949 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644036
#644036
oklch(41% 0.053 36.2)
- #24525D
#24525D
oklch(41.1% 0.053 215.6)
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 #644036, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.026
- Brownish Purple #76424E ΔE 0.052
- Mud Brown #60460F ΔE 0.055
- Chestnut #742802 ΔE 0.067
- Charcoal Grey #3C4142 ΔE 0.072
- Milk Chocolate #7F4E1E ΔE 0.077
- Red Brown #8B2E16 ΔE 0.082
- Green Brown #544E03 ΔE 0.083
Use #644036 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.