#642C3F
Closest named color: Purple Brown (#673A3F). oklch(37.6% 0.084 0.5), rgb(100, 44, 63).
Aa
White text reads best on this color (10.63:1).
About this color
#642C3F is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.084 and its hue 1°. 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 10.63:1.
| 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 | 10.63:1 |
Values
| HEX | #642C3F |
| RGB | rgb(100, 44, 63) |
| HSL | hsl(340, 39%, 28%) |
| OKLCH | oklch(37.6% 0.084 0.5) |
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 #642C3F | 10.63:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #642C3F | 1.97:1 | Fails | Lc 9.6 | Not readable |
| #642C3F text on white | 10.63:1 | AAA | Lc 94.3 | Preferred for body text |
| #642C3F 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
#E4B0BE
oklch(80.8% 0.063 0.8)
-
Step 400
400
#D4869D
oklch(70.7% 0.099 0.8)
-
Step 500
500
#C76585
oklch(63.1% 0.129 0.7)
-
Step 600
600
#B24A6F
oklch(55.6% 0.14 0.5)
-
Step 700
700
#993B5D
oklch(49.2% 0.13 0.6)
-
Step 800
800
#7C314C
oklch(42.6% 0.108 0.2)
-
Step 900
900 (this color)
#642C3F
oklch(37.6% 0.084 0.5)
-
Step 950
950
#3B1A25
oklch(26.9% 0.054 0.2)
#642C3F 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) | #353840 | 0.092 |
| Deuteranopia (no green cones) | #44423E | 0.083 |
| Tritanopia (no blue cones) | #6C2833 | 0.024 |
| Achromatopsia (no color) | #3E3E3E | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642C3F
#642C3F
oklch(37.6% 0.084 0.5)
- #004D43
#004D43
oklch(37.7% 0.068 180.3)
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 #642C3F, 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 0.068
- Wine Red #7B0323 ΔE 0.070
- Brownish Purple #76424E ΔE 0.071
- Grape Purple #5D1451 ΔE 0.071
- Wine #80013F ΔE 0.074
- Velvet #750851 ΔE 0.074
Use #642C3F 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.