#644D59
Closest named color: Brownish Purple (#76424E). oklch(44.8% 0.036 346), rgb(100, 77, 89).
Aa
White text reads best on this color (7.64:1).
About this color
#644D59 is a dark, muted red. In OKLCH its lightness is 45%, its chroma 0.036 and its hue 346°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.041 away. White text reads best on it, at 7.64:1.
| Hue family | Reds |
| Lightness | dark (45%) |
| Chroma | muted (0.036) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.74:1 |
| White text | 7.64:1 |
Values
| HEX | #644D59 |
| RGB | rgb(100, 77, 89) |
| HSL | hsl(329, 13%, 35%) |
| OKLCH | oklch(44.8% 0.036 346) |
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 #644D59 | 7.64:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #644D59 | 2.74:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #644D59 text on white | 7.64:1 | AAA | Lc 86.5 | Fine for body text |
| #644D59 text on black | 2.74:1 | Fails | Lc -15.5 | Dividers and decoration only |
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
#DFD6DB
oklch(88.5% 0.012 342.7)
-
Step 300
300
#CBBBC3
oklch(80.8% 0.021 345.8)
-
Step 400
400
#B199A5
oklch(70.8% 0.033 346.3)
-
Step 500
500
#9D7F8F
oklch(63% 0.043 345.1)
-
Step 600
600
#886979
oklch(55.7% 0.046 346.3)
-
Step 700
700
#735766
oklch(49.1% 0.043 345.4)
-
Step 800
800 (this color)
#644D59
oklch(44.8% 0.036 346)
-
Step 900
900
#4D3C45
oklch(37.8% 0.028 345.4)
-
Step 950
950
#2D2328
oklch(27% 0.017 346.8)
#644D59 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) | #4E5159 | 0.038 |
| Deuteranopia (no green cones) | #545558 | 0.035 |
| Tritanopia (no blue cones) | #674D51 | 0.014 |
| Achromatopsia (no color) | #535353 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644D59
#644D59
oklch(44.8% 0.036 346)
- #425B50
#425B50
oklch(44.7% 0.035 165.9)
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 #644D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.041
- Dusty Grape #545775 ΔE 0.051
- Purple Brown #673A3F ΔE 0.056
- Dark Mauve #874C62 ΔE 0.067
- YInMn Blue #415A77 ΔE 0.070
- Dusk #4E5481 ΔE 0.070
- Slate #516572 ΔE 0.072
- Dim Gray #696969 ΔE 0.081
Use #644D59 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.