#644A58
Closest named color: Brownish Purple (#76424E). oklch(44.2% 0.041 345.4), rgb(100, 74, 88).
Aa
White text reads best on this color (7.88:1).
About this color
#644A58 is a dark, muted red. In OKLCH its lightness is 44%, its chroma 0.041 and its hue 345°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.038 away. White text reads best on it, at 7.88:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | muted (0.041) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #644A58 |
| RGB | rgb(100, 74, 88) |
| HSL | hsl(328, 15%, 34%) |
| OKLCH | oklch(44.2% 0.041 345.4) |
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 #644A58 | 7.88:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #644A58 | 2.66:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #644A58 text on white | 7.88:1 | AAA | Lc 87.3 | Fine for body text |
| #644A58 text on black | 2.66:1 | Fails | Lc -14.8 | 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
#F7F5F6
oklch(97.2% 0.002 345.2)
-
Step 100
100
#EDE8EB
oklch(93.6% 0.007 340.4)
-
Step 200
200
#E0D6DB
oklch(88.6% 0.013 345.5)
-
Step 300
300
#CDBBC4
oklch(81% 0.024 345.9)
-
Step 400
400
#B397A6
oklch(70.6% 0.039 344.7)
-
Step 500
500
#A07E90
oklch(63.1% 0.049 345.5)
-
Step 600
600
#8B677A
oklch(55.6% 0.053 346)
-
Step 700
700
#765667
oklch(49.2% 0.049 345.9)
-
Step 800
800 (this color)
#644A58
oklch(44.2% 0.041 345.4)
-
Step 900
900
#4E3B45
oklch(37.7% 0.031 345.8)
-
Step 950
950
#2E2329
oklch(27.1% 0.02 344.5)
#644A58 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) | #4C4F59 | 0.042 |
| Deuteranopia (no green cones) | #525357 | 0.039 |
| Tritanopia (no blue cones) | #684A4F | 0.016 |
| Achromatopsia (no color) | #515151 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644A58
#644A58
oklch(44.2% 0.041 345.4)
- #3D5A4D
#3D5A4D
oklch(44% 0.041 165)
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 #644A58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.038
- Purple Brown #673A3F ΔE 0.050
- Dusty Grape #545775 ΔE 0.055
- Dark Mauve #874C62 ΔE 0.068
- Dusk #4E5481 ΔE 0.072
- YInMn Blue #415A77 ΔE 0.074
- Slate #516572 ΔE 0.080
- Charcoal Grey #3C4142 ΔE 0.084
Use #644A58 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.