#644B4A
Closest named color: Brownish Purple (#76424E). oklch(43.9% 0.034 21.2), rgb(100, 75, 74).
Aa
White text reads best on this color (7.93:1).
About this color
#644B4A is a dark, muted red. In OKLCH its lightness is 44%, its chroma 0.034 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.042 away. White text reads best on it, at 7.93:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | muted (0.034) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #644B4A |
| RGB | rgb(100, 75, 74) |
| HSL | hsl(2, 15%, 34%) |
| OKLCH | oklch(43.9% 0.034 21.2) |
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 #644B4A | 7.93:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #644B4A | 2.64:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #644B4A text on white | 7.93:1 | AAA | Lc 87.5 | Fine for body text |
| #644B4A text on black | 2.64:1 | Fails | Lc -14.6 | 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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EEE8E8
oklch(93.6% 0.007 17.3)
-
Step 200
200
#E0D6D6
oklch(88.4% 0.011 17.4)
-
Step 300
300
#CDBCBB
oklch(80.9% 0.019 21.6)
-
Step 400
400
#B49998
oklch(70.7% 0.032 20.5)
-
Step 500
500
#A1807F
oklch(63.1% 0.041 20.3)
-
Step 600
600
#8C6968
oklch(55.6% 0.045 20.5)
-
Step 700
700
#775856
oklch(49.2% 0.041 22.9)
-
Step 800
800 (this color)
#644B4A
oklch(43.9% 0.034 21.2)
-
Step 900
900
#4F3C3B
oklch(37.7% 0.027 21.9)
-
Step 950
950
#2E2323
oklch(26.9% 0.017 18.3)
#644B4A 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) | #504E4A | 0.035 |
| Deuteranopia (no green cones) | #55534A | 0.034 |
| Tritanopia (no blue cones) | #69484B | 0.013 |
| Achromatopsia (no color) | #515151 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644B4A
#644B4A
oklch(43.9% 0.034 21.2)
- #3B585A
#3B585A
oklch(43.8% 0.035 201.4)
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 #644B4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.042
- Purple Brown #673A3F ΔE 0.046
- Dusty Grape #545775 ΔE 0.070
- Mud Brown #60460F ΔE 0.072
- Milk Chocolate #7F4E1E ΔE 0.075
- Dark Mauve #874C62 ΔE 0.077
- Charcoal Grey #3C4142 ΔE 0.079
- Dark Slate Gray #2F4F4F ΔE 0.080
Use #644B4A 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.