#644C59
Closest named color: Brownish Purple (#76424E). oklch(44.6% 0.038 345), rgb(100, 76, 89).
Aa
White text reads best on this color (7.72:1).
About this color
#644C59 is a dark, muted red. In OKLCH its lightness is 45%, its chroma 0.038 and its hue 345°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.040 away. White text reads best on it, at 7.72:1.
| Hue family | Reds |
| Lightness | dark (45%) |
| Chroma | muted (0.038) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #644C59 |
| RGB | rgb(100, 76, 89) |
| HSL | hsl(328, 14%, 35%) |
| OKLCH | oklch(44.6% 0.038 345) |
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 #644C59 | 7.72:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #644C59 | 2.71:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #644C59 text on white | 7.72:1 | AAA | Lc 86.8 | Fine for body text |
| #644C59 text on black | 2.71:1 | Fails | Lc -15.3 | 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
#CCBBC4
oklch(80.9% 0.023 344.3)
-
Step 400
400
#B298A6
oklch(70.7% 0.036 344.4)
-
Step 500
500
#9E7F90
oklch(63.1% 0.045 344.4)
-
Step 600
600
#89687A
oklch(55.6% 0.049 344.9)
-
Step 700
700
#745667
oklch(49% 0.047 344)
-
Step 800
800 (this color)
#644C59
oklch(44.6% 0.038 345)
-
Step 900
900
#4D3B45
oklch(37.5% 0.03 344.2)
-
Step 950
950
#2D2328
oklch(27% 0.017 346.8)
#644C59 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) | #4D515A | 0.040 |
| Deuteranopia (no green cones) | #535458 | 0.036 |
| Tritanopia (no blue cones) | #674C50 | 0.015 |
| Achromatopsia (no color) | #535353 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644C59
#644C59
oklch(44.6% 0.038 345)
- #405B4F
#405B4F
oklch(44.6% 0.038 165.5)
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 #644C59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.040
- Dusty Grape #545775 ΔE 0.052
- Purple Brown #673A3F ΔE 0.054
- Dark Mauve #874C62 ΔE 0.067
- Dusk #4E5481 ΔE 0.070
- YInMn Blue #415A77 ΔE 0.071
- Slate #516572 ΔE 0.075
- Dim Gray #696969 ΔE 0.084
Use #644C59 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.