#644A4C
Closest named color: Brownish Purple (#76424E). oklch(43.8% 0.036 13.5), rgb(100, 74, 76).
Aa
White text reads best on this color (7.99:1).
About this color
#644A4C is a dark, muted red. In OKLCH its lightness is 44%, its chroma 0.036 and its hue 13°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.039 away. White text reads best on it, at 7.99:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | muted (0.036) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #644A4C |
| RGB | rgb(100, 74, 76) |
| HSL | hsl(355, 15%, 34%) |
| OKLCH | oklch(43.8% 0.036 13.5) |
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 #644A4C | 7.99:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #644A4C | 2.62:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #644A4C text on white | 7.99:1 | AAA | Lc 87.7 | Fine for body text |
| #644A4C text on black | 2.62:1 | 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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EEE8E8
oklch(93.6% 0.007 17.3)
-
Step 200
200
#E1D6D7
oklch(88.5% 0.012 11)
-
Step 300
300
#CEBBBD
oklch(80.9% 0.022 10.3)
-
Step 400
400
#B4999A
oklch(70.7% 0.032 15.4)
-
Step 500
500
#A27F82
oklch(63.1% 0.044 12.6)
-
Step 600
600
#8C686B
oklch(55.5% 0.046 13.1)
-
Step 700
700
#775759
oklch(49.1% 0.043 14.6)
-
Step 800
800 (this color)
#644A4C
oklch(43.8% 0.036 13.5)
-
Step 900
900
#4F3C3D
oklch(37.7% 0.027 14.9)
-
Step 950
950
#2E2324
oklch(26.9% 0.017 12.1)
#644A4C 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) | #4E4E4C | 0.039 |
| Deuteranopia (no green cones) | #54524C | 0.035 |
| Tritanopia (no blue cones) | #69484B | 0.010 |
| Achromatopsia (no color) | #515151 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644A4C
#644A4C
oklch(43.8% 0.036 13.5)
- #3A5857
#3A5857
oklch(43.7% 0.036 193.3)
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 #644A4C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.039
- Purple Brown #673A3F ΔE 0.043
- Dusty Grape #545775 ΔE 0.068
- Dark Mauve #874C62 ΔE 0.075
- Mud Brown #60460F ΔE 0.076
- Charcoal Grey #3C4142 ΔE 0.079
- Milk Chocolate #7F4E1E ΔE 0.079
- Dark Slate Gray #2F4F4F ΔE 0.081
Use #644A4C 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.