#644A54
Closest named color: Brownish Purple (#76424E). oklch(44% 0.038 353.9), rgb(100, 74, 84).
Aa
White text reads best on this color (7.92:1).
About this color
#644A54 is a dark, muted red. In OKLCH its lightness is 44%, its chroma 0.038 and its hue 354°. 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 7.92:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | muted (0.038) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.64:1 |
| White text | 7.92:1 |
Values
| HEX | #644A54 |
| RGB | rgb(100, 74, 84) |
| HSL | hsl(337, 15%, 34%) |
| OKLCH | oklch(44% 0.038 353.9) |
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 #644A54 | 7.92:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #644A54 | 2.64:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #644A54 text on white | 7.92:1 | AAA | Lc 87.5 | Fine for body text |
| #644A54 text on black | 2.64:1 | 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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EEE8EA
oklch(93.6% 0.007 354.8)
-
Step 200
200
#E0D6DA
oklch(88.5% 0.012 351)
-
Step 300
300
#CDBBC1
oklch(80.9% 0.022 355.4)
-
Step 400
400
#B498A2
oklch(70.8% 0.036 354.6)
-
Step 500
500
#A17E8B
oklch(63.1% 0.047 354.3)
-
Step 600
600
#8B6775
oklch(55.5% 0.05 353.7)
-
Step 700
700
#765662
oklch(49.1% 0.046 354.6)
-
Step 800
800 (this color)
#644A54
oklch(44% 0.038 353.9)
-
Step 900
900
#4F3B43
oklch(37.7% 0.031 352.8)
-
Step 950
950
#2E2327
oklch(27.1% 0.018 354.6)
#644A54 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) | #4D4F54 | 0.041 |
| Deuteranopia (no green cones) | #535353 | 0.038 |
| Tritanopia (no blue cones) | #68494D | 0.012 |
| Achromatopsia (no color) | #515151 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644A54
#644A54
oklch(44% 0.038 353.9)
- #3C5A51
#3C5A51
oklch(44.1% 0.039 173.8)
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 #644A54, 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 0.046
- Dusty Grape #545775 ΔE 0.059
- Dark Mauve #874C62 ΔE 0.070
- YInMn Blue #415A77 ΔE 0.077
- Dusk #4E5481 ΔE 0.077
- Slate #516572 ΔE 0.081
- Charcoal Grey #3C4142 ΔE 0.082
Use #644A54 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.