#64273D
Closest named color: Purple Brown (#673A3F). oklch(36.8% 0.091 0), rgb(100, 39, 61).
Aa
White text reads best on this color (11.05:1).
About this color
#64273D is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.091 and its hue 0°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.050 away. White text reads best on it, at 11.05:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.89:1 |
| White text | 11.05:1 |
Values
| HEX | #64273D |
| RGB | rgb(100, 39, 61) |
| HSL | hsl(338, 44%, 27%) |
| OKLCH | oklch(36.8% 0.091 0) |
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 #64273D | 11.05:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #64273D | 1.89:1 | Fails | Lc 8.8 | Not readable |
| #64273D text on white | 11.05:1 | AAA | Lc 95.1 | Preferred for body text |
| #64273D text on black | 1.89:1 | Fails | Lc -7.6 | 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
#F6E5E9
oklch(93.7% 0.019 1.4)
-
Step 200
200
#F0CFD8
oklch(88.5% 0.039 359.6)
-
Step 300
300
#E7AFBF
oklch(81% 0.068 359.9)
-
Step 400
400
#D8839E
oklch(70.7% 0.109 359.8)
-
Step 500
500
#CB6186
oklch(63.1% 0.14 359.9)
-
Step 600
600
#B74570
oklch(55.7% 0.153 359.9)
-
Step 700
700
#9D365D
oklch(49.2% 0.141 0.4)
-
Step 800
800
#7F2D4C
oklch(42.6% 0.117 359.9)
-
Step 900
900 (this color)
#64273D
oklch(36.8% 0.091 0)
-
Step 950
950
#3D1925
oklch(27.1% 0.058 0.7)
#64273D 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) | #31353E | 0.102 |
| Deuteranopia (no green cones) | #41403C | 0.092 |
| Tritanopia (no blue cones) | #6C222F | 0.027 |
| Achromatopsia (no color) | #3C3C3C | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64273D
#64273D
oklch(36.8% 0.091 0)
- #004A40
#004A40
oklch(36.7% 0.067 179.9)
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 #64273D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.050
- Merlot #730039 ΔE 0.055
- Bordeaux #7B002C ΔE 0.062
- Grape Purple #5D1451 ΔE 0.063
- Wine Red #7B0323 ΔE 0.064
- Burgundy #610023 ΔE 0.065
- Claret #680018 ΔE 0.067
- Velvet #750851 ΔE 0.068
Use #64273D 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.