#663144
Closest named color: Purple Brown (#673A3F). oklch(38.9% 0.079 358.7), rgb(102, 49, 68).
Aa
White text reads best on this color (10.05:1).
About this color
#663144 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.079 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.029 away. White text reads best on it, at 10.05:1.
| 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 | 10.05:1 |
Values
| HEX | #663144 |
| RGB | rgb(102, 49, 68) |
| HSL | hsl(338, 35%, 30%) |
| OKLCH | oklch(38.9% 0.079 358.7) |
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 #663144 | 10.05:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #663144 | 2.08:1 | Fails | Lc 10.9 | Not readable |
| #663144 text on white | 10.05:1 | AAA | Lc 93.0 | Preferred for body text |
| #663144 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
#EDD1D9
oklch(88.6% 0.033 358.6)
-
Step 300
300
#E2B1C0
oklch(80.9% 0.06 358.3)
-
Step 400
400
#D1879F
oklch(70.6% 0.095 358.8)
-
Step 500
500
#C36888
oklch(63.1% 0.121 358.8)
-
Step 600
600
#AE4D72
oklch(55.5% 0.133 358.4)
-
Step 700
700
#963E5F
oklch(49.2% 0.123 359.2)
-
Step 800
800
#7A344E
oklch(42.8% 0.102 359)
-
Step 900
900 (this color)
#663144
oklch(38.9% 0.079 358.7)
-
Step 950
950
#3A1B26
oklch(27% 0.051 358.5)
#663144 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) | #393C45 | 0.087 |
| Deuteranopia (no green cones) | #464643 | 0.081 |
| Tritanopia (no blue cones) | #6D2D38 | 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°).
- #663144
#663144
oklch(38.9% 0.079 358.7)
- #005145
#005145
oklch(38.9% 0.071 178.3)
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 #663144, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.029
- Brownish Purple #76424E ΔE 0.057
- Merlot #730039 ΔE 0.073
- Bordeaux #7B002C ΔE 0.075
- Wine Red #7B0323 ΔE 0.077
- Wine #80013F ΔE 0.077
- Velvet #750851 ΔE 0.077
- Red Purple #820747 ΔE 0.078
Use #663144 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.