#664355
Closest named color: Brownish Purple (#76424E). oklch(42.9% 0.055 347.5), rgb(102, 67, 85).
Aa
White text reads best on this color (8.40:1).
About this color
#664355 is a dark, muted red. In OKLCH its lightness is 43%, its chroma 0.055 and its hue 347°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.032 away. White text reads best on it, at 8.40:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | muted (0.055) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.49:1 |
| White text | 8.40:1 |
Values
| HEX | #664355 |
| RGB | rgb(102, 67, 85) |
| HSL | hsl(329, 21%, 33%) |
| OKLCH | oklch(42.9% 0.055 347.5) |
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 #664355 | 8.40:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #664355 | 2.49:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #664355 text on white | 8.40:1 | AAA | Lc 88.9 | Fine for body text |
| #664355 text on black | 2.49:1 | Fails | Lc -13.3 | 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
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#EFE7EB
oklch(93.5% 0.01 345.4)
-
Step 200
200
#E3D5DB
oklch(88.6% 0.017 349.5)
-
Step 300
300
#D1B9C4
oklch(80.9% 0.031 348.4)
-
Step 400
400
#BA94A6
oklch(70.7% 0.052 348.4)
-
Step 500
500
#A87991
oklch(63% 0.067 347.2)
-
Step 600
600
#93627B
oklch(55.6% 0.072 347.7)
-
Step 700
700
#7D5168
oklch(49.1% 0.067 347.2)
-
Step 800
800 (this color)
#664355
oklch(42.9% 0.055 347.5)
-
Step 900
900
#533846
oklch(37.7% 0.044 347)
-
Step 950
950
#312129
oklch(27% 0.028 347.7)
#664355 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) | #464A56 | 0.057 |
| Deuteranopia (no green cones) | #4E5054 | 0.055 |
| Tritanopia (no blue cones) | #6B4249 | 0.021 |
| Achromatopsia (no color) | #4D4D4D | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664355
#664355
oklch(42.9% 0.055 347.5)
- #2F5949
#2F5949
oklch(42.8% 0.055 167.2)
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 #664355, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.032
- Purple Brown #673A3F ΔE 0.036
- Dusty Grape #545775 ΔE 0.069
- Dark Mauve #874C62 ΔE 0.071
- Dusk #4E5481 ΔE 0.082
- Charcoal Grey #3C4142 ΔE 0.083
- YInMn Blue #415A77 ΔE 0.088
- Dark Slate Gray #2F4F4F ΔE 0.094
Use #664355 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.