#663448
Closest named color: Purple Brown (#673A3F). oklch(39.6% 0.076 355.8), rgb(102, 52, 72).
Aa
White text reads best on this color (9.76:1).
About this color
#663448 is a dark, moderately saturated red. In OKLCH its lightness is 40%, its chroma 0.076 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.026 away. White text reads best on it, at 9.76:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.076) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.14:1 |
| White text | 9.76:1 |
Values
| HEX | #663448 |
| RGB | rgb(102, 52, 72) |
| HSL | hsl(336, 32%, 30%) |
| OKLCH | oklch(39.6% 0.076 355.8) |
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 #663448 | 9.76:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #663448 | 2.14:1 | Fails | Lc 11.6 | Not readable |
| #663448 text on white | 9.76:1 | AAA | Lc 92.4 | Preferred for body text |
| #663448 text on black | 2.14:1 | Fails | Lc -10.0 | 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
#F4E6EA
oklch(93.7% 0.016 358.1)
-
Step 200
200
#EBD1DA
oklch(88.5% 0.031 354.8)
-
Step 300
300
#E0B2C2
oklch(80.9% 0.057 355.7)
-
Step 400
400
#CE89A3
oklch(70.7% 0.09 355.4)
-
Step 500
500
#C06A8C
oklch(63.1% 0.116 355.8)
-
Step 600
600
#AB5076
oklch(55.6% 0.126 355.7)
-
Step 700
700
#934063
oklch(49.1% 0.118 355.9)
-
Step 800
800
#773551
oklch(42.6% 0.098 355.4)
-
Step 900
900 (this color)
#663448
oklch(39.6% 0.076 355.8)
-
Step 950
950
#391C27
oklch(27.1% 0.048 356.6)
#663448 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) | #3B3E49 | 0.082 |
| Deuteranopia (no green cones) | #474747 | 0.076 |
| Tritanopia (no blue cones) | #6D313B | 0.024 |
| Achromatopsia (no color) | #444444 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663448
#663448
oklch(39.6% 0.076 355.8)
- #005345
#005345
oklch(39.5% 0.074 176.2)
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 #663448, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.026
- Brownish Purple #76424E ΔE 0.051
- Merlot #730039 ΔE 0.079
- Velvet #750851 ΔE 0.081
- Red Purple #820747 ΔE 0.081
- Wine #80013F ΔE 0.081
- Bordeaux #7B002C ΔE 0.082
- Grape Purple #5D1451 ΔE 0.082
Use #663448 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.