#663143
Closest named color: Purple Brown (#673A3F). oklch(38.9% 0.079 359.9), rgb(102, 49, 67).
Aa
White text reads best on this color (10.07:1).
About this color
#663143 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.079 and its hue 360°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.028 away. White text reads best on it, at 10.07:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.079) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.08:1 |
| White text | 10.07:1 |
Values
| HEX | #663143 |
| RGB | rgb(102, 49, 67) |
| HSL | hsl(340, 35%, 30%) |
| OKLCH | oklch(38.9% 0.079 359.9) |
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 #663143 | 10.07:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #663143 | 2.08:1 | Fails | Lc 10.9 | Not readable |
| #663143 text on white | 10.07:1 | AAA | Lc 93.1 | Preferred for body text |
| #663143 text on black | 2.08:1 | Fails | Lc -9.4 | 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 900.
-
Step 50
50
#FAF3F5
oklch(97% 0.008 357.8)
-
Step 100
100
#F4E5E9
oklch(93.5% 0.017 359.3)
-
Step 200
200
#EDD1D8
oklch(88.6% 0.033 0.9)
-
Step 300
300
#E2B1BF
oklch(80.9% 0.06 359.6)
-
Step 400
400
#D2879E
oklch(70.7% 0.096 360)
-
Step 500
500
#C46887
oklch(63.2% 0.122 359.7)
-
Step 600
600
#AF4E70
oklch(55.7% 0.131 0.2)
-
Step 700
700
#963E5E
oklch(49.1% 0.123 359.9)
-
Step 800
800
#7A344D
oklch(42.8% 0.101 359.8)
-
Step 900
900 (this color)
#663143
oklch(38.9% 0.079 359.9)
-
Step 950
950
#3A1B25
oklch(26.9% 0.051 0.5)
#663143 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) | #393C44 | 0.087 |
| Deuteranopia (no green cones) | #474642 | 0.080 |
| Tritanopia (no blue cones) | #6E2D38 | 0.023 |
| Achromatopsia (no color) | #424242 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663143
#663143
oklch(38.9% 0.079 359.9)
- #005146
#005146
oklch(39% 0.071 179.6)
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 #663143, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.028
- Brownish Purple #76424E ΔE 0.057
- Merlot #730039 ΔE 0.073
- Bordeaux #7B002C ΔE 0.075
- Wine Red #7B0323 ΔE 0.076
- Wine #80013F ΔE 0.077
- Chestnut #742802 ΔE 0.077
- Velvet #750851 ΔE 0.078
Use #663143 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.