#642743
Closest named color: Purple Brown (#673A3F). oklch(37% 0.094 354), rgb(100, 39, 67).
Aa
White text reads best on this color (10.97:1).
About this color
#642743 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.094 and its hue 354°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.053 away. White text reads best on it, at 10.97:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.094) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.91:1 |
| White text | 10.97:1 |
Values
| HEX | #642743 |
| RGB | rgb(100, 39, 67) |
| HSL | hsl(332, 44%, 27%) |
| OKLCH | oklch(37% 0.094 354) |
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 #642743 | 10.97:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #642743 | 1.91:1 | Fails | Lc 9.0 | Not readable |
| #642743 text on white | 10.97:1 | AAA | Lc 94.9 | Preferred for body text |
| #642743 text on black | 1.91:1 | Fails | Lc -7.7 | 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
#FBF3F6
oklch(97.1% 0.009 352.4)
-
Step 100
100
#F6E5EB
oklch(93.7% 0.02 354)
-
Step 200
200
#EFCFDB
oklch(88.5% 0.039 353.3)
-
Step 300
300
#E6AEC4
oklch(80.9% 0.071 353.4)
-
Step 400
400
#D782A5
oklch(70.7% 0.112 354.1)
-
Step 500
500
#CA608F
oklch(63.1% 0.144 354.2)
-
Step 600
600
#B54479
oklch(55.6% 0.156 354.3)
-
Step 700
700
#9C3466
oklch(49.1% 0.147 354.2)
-
Step 800
800
#7F2D53
oklch(42.8% 0.12 354.6)
-
Step 900
900 (this color)
#642743
oklch(37% 0.094 354)
-
Step 950
950
#3C1928
oklch(27% 0.059 354.7)
#642743 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) | #303544 | 0.103 |
| Deuteranopia (no green cones) | #404042 | 0.093 |
| Tritanopia (no blue cones) | #6B2332 | 0.031 |
| Achromatopsia (no color) | #3C3C3C | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642743
#642743
oklch(37% 0.094 354)
- #004B3D
#004B3D
oklch(36.8% 0.07 174.8)
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 #642743, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.053
- Merlot #730039 ΔE 0.054
- Grape Purple #5D1451 ΔE 0.056
- Velvet #750851 ΔE 0.061
- Bordeaux #7B002C ΔE 0.065
- Wine #80013F ΔE 0.067
- Red Purple #820747 ΔE 0.069
- Wine Red #7B0323 ΔE 0.070
Use #642743 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.