#644A55
Closest named color: Brownish Purple (#76424E). oklch(44.1% 0.039 351.6), rgb(100, 74, 85).
Aa
White text reads best on this color (7.91:1).
About this color
#644A55 is a dark, muted red. In OKLCH its lightness is 44%, its chroma 0.039 and its hue 352°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.037 away. White text reads best on it, at 7.91:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | muted (0.039) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #644A55 |
| RGB | rgb(100, 74, 85) |
| HSL | hsl(335, 15%, 34%) |
| OKLCH | oklch(44.1% 0.039 351.6) |
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 #644A55 | 7.91:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #644A55 | 2.65:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #644A55 text on white | 7.91:1 | AAA | Lc 87.4 | Fine for body text |
| #644A55 text on black | 2.65:1 | Fails | Lc -14.7 | 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
#EEE8EA
oklch(93.6% 0.007 354.8)
-
Step 200
200
#E0D6DA
oklch(88.5% 0.012 351)
-
Step 300
300
#CDBBC2
oklch(80.9% 0.022 352)
-
Step 400
400
#B398A3
oklch(70.7% 0.035 351.6)
-
Step 500
500
#A07E8D
oklch(63% 0.047 350.2)
-
Step 600
600
#8B6777
oklch(55.5% 0.051 350.5)
-
Step 700
700
#765664
oklch(49.1% 0.047 351)
-
Step 800
800 (this color)
#644A55
oklch(44.1% 0.039 351.6)
-
Step 900
900
#4F3B43
oklch(37.7% 0.031 352.8)
-
Step 950
950
#2E2327
oklch(27.1% 0.018 354.6)
#644A55 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) | #4C4F55 | 0.042 |
| Deuteranopia (no green cones) | #525354 | 0.039 |
| Tritanopia (no blue cones) | #68494E | 0.013 |
| Achromatopsia (no color) | #515151 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644A55
#644A55
oklch(44.1% 0.039 351.6)
- #3C5A50
#3C5A50
oklch(44.1% 0.039 171.6)
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 #644A55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.037
- Purple Brown #673A3F ΔE 0.047
- Dusty Grape #545775 ΔE 0.058
- Dark Mauve #874C62 ΔE 0.069
- YInMn Blue #415A77 ΔE 0.076
- Dusk #4E5481 ΔE 0.076
- Slate #516572 ΔE 0.081
- Charcoal Grey #3C4142 ΔE 0.083
Use #644A55 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.