#644E55
Closest named color: Brownish Purple (#76424E). oklch(44.9% 0.031 357.5), rgb(100, 78, 85).
Aa
White text reads best on this color (7.60:1).
About this color
#644E55 is a dark, muted red. In OKLCH its lightness is 45%, its chroma 0.031 and its hue 357°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.043 away. White text reads best on it, at 7.60:1.
| Hue family | Reds |
| Lightness | dark (45%) |
| Chroma | muted (0.031) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.76:1 |
| White text | 7.60:1 |
Values
| HEX | #644E55 |
| RGB | rgb(100, 78, 85) |
| HSL | hsl(341, 12%, 35%) |
| OKLCH | oklch(44.9% 0.031 357.5) |
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 #644E55 | 7.60:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #644E55 | 2.76:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #644E55 text on white | 7.60:1 | AAA | Lc 86.4 | Fine for body text |
| #644E55 text on black | 2.76:1 | Fails | Lc -15.7 | 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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EDE8EA
oklch(93.5% 0.006 350.8)
-
Step 200
200
#DFD6D9
oklch(88.4% 0.011 354.9)
-
Step 300
300
#CBBCC0
oklch(80.9% 0.018 359.4)
-
Step 400
400
#B199A1
oklch(70.7% 0.03 355.8)
-
Step 500
500
#9D8089
oklch(63% 0.038 357.7)
-
Step 600
600
#886A73
oklch(55.7% 0.04 358.7)
-
Step 700
700
#735861
oklch(49.1% 0.038 356.7)
-
Step 800
800 (this color)
#644E55
oklch(44.9% 0.031 357.5)
-
Step 900
900
#4D3C42
oklch(37.7% 0.026 355.3)
-
Step 950
950
#2D2326
oklch(26.9% 0.016 358.3)
#644E55 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) | #505255 | 0.035 |
| Deuteranopia (no green cones) | #555555 | 0.031 |
| Tritanopia (no blue cones) | #684D50 | 0.010 |
| Achromatopsia (no color) | #545454 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E55
#644E55
oklch(44.9% 0.031 357.5)
- #425B55
#425B55
oklch(44.9% 0.032 178.3)
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 #644E55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.043
- Dusty Grape #545775 ΔE 0.055
- Purple Brown #673A3F ΔE 0.056
- Dark Mauve #874C62 ΔE 0.069
- Slate #516572 ΔE 0.072
- YInMn Blue #415A77 ΔE 0.072
- Dusk #4E5481 ΔE 0.076
- Dim Gray #696969 ΔE 0.078
Use #644E55 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.