#642733
Closest named color: Purple Brown (#673A3F). oklch(36.4% 0.089 10.4), rgb(100, 39, 51).
Aa
White text reads best on this color (11.17:1).
About this color
#642733 is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.089 and its hue 10°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.048 away. White text reads best on it, at 11.17:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.089) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.87:1 |
| White text | 11.17:1 |
Values
| HEX | #642733 |
| RGB | rgb(100, 39, 51) |
| HSL | hsl(348, 44%, 27%) |
| OKLCH | oklch(36.4% 0.089 10.4) |
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 #642733 | 11.17:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #642733 | 1.87:1 | Fails | Lc 8.6 | Not readable |
| #642733 text on white | 11.17:1 | AAA | Lc 95.3 | Preferred for body text |
| #642733 text on black | 1.87:1 | Fails | Lc -7.4 | 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
#FBF3F4
oklch(97.1% 0.009 8.5)
-
Step 100
100
#F6E5E7
oklch(93.6% 0.019 9.3)
-
Step 200
200
#F0D0D3
oklch(88.5% 0.036 11.4)
-
Step 300
300
#E8AFB6
oklch(80.8% 0.067 10.5)
-
Step 400
400
#DA8491
oklch(70.8% 0.107 10.4)
-
Step 500
500
#CD6276
oklch(63% 0.137 10.1)
-
Step 600
600
#B8475F
oklch(55.6% 0.147 10.3)
-
Step 700
700
#9E374E
oklch(49% 0.137 10.2)
-
Step 800
800
#812F40
oklch(42.8% 0.114 10.6)
-
Step 900
900 (this color)
#642733
oklch(36.4% 0.089 10.4)
-
Step 950
950
#3D1A20
oklch(27.1% 0.055 10.7)
#642733 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) | #343433 | 0.097 |
| Deuteranopia (no green cones) | #434032 | 0.091 |
| Tritanopia (no blue cones) | #6D1F2C | 0.023 |
| Achromatopsia (no color) | #3B3B3B | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642733
#642733
oklch(36.4% 0.089 10.4)
- #004946
#004946
oklch(36.6% 0.063 190.1)
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 #642733, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.048
- Reddy Brown #6E1005 ΔE 0.058
- Claret #680018 ΔE 0.058
- Wine Red #7B0323 ΔE 0.059
- Merlot #730039 ΔE 0.060
- Bordeaux #7B002C ΔE 0.061
- Burgundy #610023 ΔE 0.062
- Chestnut #742802 ΔE 0.064
Use #642733 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.