#642C40
Closest named color: Purple Brown (#673A3F). oklch(37.6% 0.084 359.4), rgb(100, 44, 64).
Aa
White text reads best on this color (10.62:1).
About this color
#642C40 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.084 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.039 away. White text reads best on it, at 10.62:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.97:1 |
| White text | 10.62:1 |
Values
| HEX | #642C40 |
| RGB | rgb(100, 44, 64) |
| HSL | hsl(339, 39%, 28%) |
| OKLCH | oklch(37.6% 0.084 359.4) |
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 #642C40 | 10.62:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #642C40 | 1.97:1 | Fails | Lc 9.7 | Not readable |
| #642C40 text on white | 10.62:1 | AAA | Lc 94.3 | Preferred for body text |
| #642C40 text on black | 1.97:1 | Fails | Lc -8.3 | 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 900.
-
Step 50
50
#FBF3F5
oklch(97.1% 0.009 0.1)
-
Step 100
100
#F5E5E9
oklch(93.6% 0.018 0.4)
-
Step 200
200
#EED0D8
oklch(88.5% 0.035 359.9)
-
Step 300
300
#E4B0BF
oklch(80.9% 0.063 359.6)
-
Step 400
400
#D4869F
oklch(70.8% 0.1 359.3)
-
Step 500
500
#C76587
oklch(63.1% 0.13 359.5)
-
Step 600
600
#B24A71
oklch(55.6% 0.141 359.3)
-
Step 700
700
#993B5E
oklch(49.2% 0.13 359.9)
-
Step 800
800
#7C314D
oklch(42.7% 0.108 359.4)
-
Step 900
900 (this color)
#642C40
oklch(37.6% 0.084 359.4)
-
Step 950
950
#3B1A26
oklch(27% 0.054 358.3)
#642C40 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) | #353841 | 0.092 |
| Deuteranopia (no green cones) | #43423F | 0.084 |
| Tritanopia (no blue cones) | #6C2833 | 0.025 |
| Achromatopsia (no color) | #3E3E3E | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642C40
#642C40
oklch(37.6% 0.084 359.4)
- #004D42
#004D42
oklch(37.6% 0.069 179)
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 #642C40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.039
- Merlot #730039 ΔE 0.064
- Bordeaux #7B002C ΔE 0.069
- Grape Purple #5D1451 ΔE 0.070
- Brownish Purple #76424E ΔE 0.070
- Wine Red #7B0323 ΔE 0.071
- Velvet #750851 ΔE 0.073
- Wine #80013F ΔE 0.073
Use #642C40 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.