#642939
Closest named color: Purple Brown (#673A3F). oklch(36.9% 0.087 5.3), rgb(100, 41, 57).
Aa
White text reads best on this color (10.94:1).
About this color
#642939 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.087 and its hue 5°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.044 away. White text reads best on it, at 10.94:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.087) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.91:1 |
| White text | 10.94:1 |
Values
| HEX | #642939 |
| RGB | rgb(100, 41, 57) |
| HSL | hsl(344, 42%, 28%) |
| OKLCH | oklch(36.9% 0.087 5.3) |
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 #642939 | 10.94:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #642939 | 1.91:1 | Fails | Lc 9.0 | Not readable |
| #642939 text on white | 10.94:1 | AAA | Lc 94.9 | Preferred for body text |
| #642939 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
#FBF3F4
oklch(97.1% 0.009 8.5)
-
Step 100
100
#F6E5E8
oklch(93.6% 0.019 5.3)
-
Step 200
200
#EFD0D6
oklch(88.5% 0.036 4.7)
-
Step 300
300
#E6B0BB
oklch(81% 0.064 5)
-
Step 400
400
#D78497
oklch(70.6% 0.104 5.3)
-
Step 500
500
#CA637E
oklch(63% 0.133 5.1)
-
Step 600
600
#B64867
oklch(55.7% 0.145 5.6)
-
Step 700
700
#9C3956
oklch(49.2% 0.134 5.4)
-
Step 800
800
#7F3046
oklch(42.8% 0.111 5.8)
-
Step 900
900 (this color)
#642939
oklch(36.9% 0.087 5.3)
-
Step 950
950
#3C1A23
oklch(27% 0.054 4.6)
#642939 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) | #343539 | 0.096 |
| Deuteranopia (no green cones) | #434138 | 0.089 |
| Tritanopia (no blue cones) | #6C232F | 0.022 |
| Achromatopsia (no color) | #3C3C3C | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642939
#642939
oklch(36.9% 0.087 5.3)
- #004A44
#004A44
oklch(36.8% 0.065 185.6)
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 #642939, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.044
- Merlot #730039 ΔE 0.060
- Bordeaux #7B002C ΔE 0.063
- Wine Red #7B0323 ΔE 0.064
- Claret #680018 ΔE 0.066
- Reddy Brown #6E1005 ΔE 0.066
- Burgundy #610023 ΔE 0.067
- Chestnut #742802 ΔE 0.071
Use #642939 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.