#644B45
Closest named color: Brownish Purple (#76424E). oklch(43.8% 0.036 33.8), rgb(100, 75, 69).
Aa
White text reads best on this color (7.97:1).
About this color
#644B45 is a dark, muted red. In OKLCH its lightness is 44%, its chroma 0.036 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.046 away. White text reads best on it, at 7.97:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | muted (0.036) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #644B45 |
| RGB | rgb(100, 75, 69) |
| HSL | hsl(12, 18%, 33%) |
| OKLCH | oklch(43.8% 0.036 33.8) |
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 #644B45 | 7.97:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #644B45 | 2.63:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #644B45 text on white | 7.97:1 | AAA | Lc 87.6 | Fine for body text |
| #644B45 text on black | 2.63:1 | Fails | Lc -14.5 | 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EEE8E7
oklch(93.5% 0.007 28.8)
-
Step 200
200
#E1D7D4
oklch(88.6% 0.012 37.4)
-
Step 300
300
#CEBCB8
oklch(80.9% 0.021 32.5)
-
Step 400
400
#B49A93
oklch(70.7% 0.033 35.5)
-
Step 500
500
#A28179
oklch(63.2% 0.043 33.9)
-
Step 600
600
#8C6A62
oklch(55.6% 0.046 33.6)
-
Step 700
700
#775851
oklch(49.1% 0.043 33)
-
Step 800
800 (this color)
#644B45
oklch(43.8% 0.036 33.8)
-
Step 900
900
#4F3C38
oklch(37.6% 0.028 32)
-
Step 950
950
#2E2321
oklch(26.8% 0.017 30.2)
#644B45 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) | #514E45 | 0.033 |
| Deuteranopia (no green cones) | #565345 | 0.033 |
| Tritanopia (no blue cones) | #6A4849 | 0.016 |
| Achromatopsia (no color) | #515151 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644B45
#644B45
oklch(43.8% 0.036 33.8)
- #3B575E
#3B575E
oklch(43.7% 0.035 215)
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 #644B45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.046
- Purple Brown #673A3F ΔE 0.046
- Mud Brown #60460F ΔE 0.064
- Milk Chocolate #7F4E1E ΔE 0.070
- Dusty Grape #545775 ΔE 0.077
- Charcoal Grey #3C4142 ΔE 0.079
- Medium Brown #7F5112 ΔE 0.080
- Dark Slate Gray #2F4F4F ΔE 0.080
Use #644B45 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.