#644755
Closest named color: Brownish Purple (#76424E). oklch(43.4% 0.045 348.6), rgb(100, 71, 85).
Aa
White text reads best on this color (8.15:1).
About this color
#644755 is a dark, muted red. In OKLCH its lightness is 43%, its chroma 0.045 and its hue 349°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.035 away. White text reads best on it, at 8.15:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | muted (0.045) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.57:1 |
| White text | 8.15:1 |
Values
| HEX | #644755 |
| RGB | rgb(100, 71, 85) |
| HSL | hsl(331, 17%, 34%) |
| OKLCH | oklch(43.4% 0.045 348.6) |
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 #644755 | 8.15:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #644755 | 2.57:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #644755 text on white | 8.15:1 | AAA | Lc 88.2 | Fine for body text |
| #644755 text on black | 2.57:1 | Fails | Lc -14.0 | 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
#F7F4F6
oklch(97% 0.004 337.4)
-
Step 100
100
#EEE8EB
oklch(93.7% 0.008 345.4)
-
Step 200
200
#E1D5DB
oklch(88.4% 0.015 345.6)
-
Step 300
300
#CEBAC3
oklch(80.8% 0.026 348.7)
-
Step 400
400
#B596A5
oklch(70.6% 0.042 347.5)
-
Step 500
500
#A37D8F
oklch(63.2% 0.053 348.7)
-
Step 600
600
#8E6679
oklch(55.7% 0.058 349.1)
-
Step 700
700
#785466
oklch(49% 0.054 347.9)
-
Step 800
800 (this color)
#644755
oklch(43.4% 0.045 348.6)
-
Step 900
900
#503A45
oklch(37.7% 0.035 347.5)
-
Step 950
950
#2F2228
oklch(27% 0.022 349.3)
#644755 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) | #494C56 | 0.047 |
| Deuteranopia (no green cones) | #505154 | 0.044 |
| Tritanopia (no blue cones) | #68464C | 0.015 |
| Achromatopsia (no color) | #4F4F4F | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644755
#644755
oklch(43.4% 0.045 348.6)
- #37594C
#37594C
oklch(43.4% 0.045 168.1)
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 #644755, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.035
- Purple Brown #673A3F ΔE 0.042
- Dusty Grape #545775 ΔE 0.062
- Dark Mauve #874C62 ΔE 0.071
- Dusk #4E5481 ΔE 0.077
- YInMn Blue #415A77 ΔE 0.080
- Charcoal Grey #3C4142 ΔE 0.081
- Dark Slate Gray #2F4F4F ΔE 0.086
Use #644755 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.