#642728
Closest named color: Reddy Brown (#6E1005). oklch(36.1% 0.089 21.6), rgb(100, 39, 40).
Aa
White text reads best on this color (11.27:1).
About this color
#642728 is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.089 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.046 away. White text reads best on it, at 11.27:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.089) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.86:1 |
| White text | 11.27:1 |
Values
| HEX | #642728 |
| RGB | rgb(100, 39, 40) |
| HSL | hsl(359, 44%, 27%) |
| OKLCH | oklch(36.1% 0.089 21.6) |
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 #642728 | 11.27:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #642728 | 1.86:1 | Fails | Lc 8.4 | Not readable |
| #642728 text on white | 11.27:1 | AAA | Lc 95.5 | Preferred for body text |
| #642728 text on black | 1.86:1 | Fails | Lc 0.0 | 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
#FBF3F3
oklch(97% 0.009 17.3)
-
Step 100
100
#F7E5E4
oklch(93.6% 0.02 21.4)
-
Step 200
200
#F1D0CE
oklch(88.5% 0.037 22)
-
Step 300
300
#E9B0AE
oklch(80.9% 0.067 21)
-
Step 400
400
#DB8583
oklch(70.7% 0.106 21.5)
-
Step 500
500
#CF6464
oklch(63.2% 0.136 21.7)
-
Step 600
600
#BA484B
oklch(55.6% 0.148 21.7)
-
Step 700
700
#A0393C
oklch(49.2% 0.137 22)
-
Step 800
800
#823032
oklch(42.8% 0.113 21.8)
-
Step 900
900 (this color)
#642728
oklch(36.1% 0.089 21.6)
-
Step 950
950
#3E1A1A
oklch(27.1% 0.057 21.5)
#642728 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) | #363328 | 0.094 |
| Deuteranopia (no green cones) | #453F27 | 0.087 |
| Tritanopia (no blue cones) | #6E1D28 | 0.026 |
| Achromatopsia (no color) | #3B3B3B | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642728
#642728
oklch(36.1% 0.089 21.6)
- #00474B
#00474B
oklch(36.2% 0.062 201.2)
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 #642728, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.046
- Chestnut #742802 ΔE 0.051
- Purple Brown #673A3F ΔE 0.051
- Claret #680018 ΔE 0.055
- Wine Red #7B0323 ΔE 0.060
- Blood #770001 ΔE 0.060
- Burgundy #610023 ΔE 0.064
- Bordeaux #7B002C ΔE 0.065
Use #642728 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.