#64273E
Closest named color: Purple Brown (#673A3F). oklch(36.8% 0.092 359), rgb(100, 39, 62).
Aa
White text reads best on this color (11.04:1).
About this color
#64273E is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.092 and its hue 359°. 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 11.04:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.90:1 |
| White text | 11.04:1 |
Values
| HEX | #64273E |
| RGB | rgb(100, 39, 62) |
| HSL | hsl(337, 44%, 27%) |
| OKLCH | oklch(36.8% 0.092 359) |
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 #64273E | 11.04:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #64273E | 1.90:1 | Fails | Lc 8.9 | Not readable |
| #64273E text on white | 11.04:1 | AAA | Lc 95.0 | Preferred for body text |
| #64273E text on black | 1.90:1 | 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
#D8839F
oklch(70.7% 0.109 359.1)
-
Step 500
500
#CB6187
oklch(63.1% 0.14 359.3)
-
Step 600
600
#B64571
oklch(55.6% 0.152 359.1)
-
Step 700
700
#9D355F
oklch(49.1% 0.143 358.9)
-
Step 800
800
#7F2D4D
oklch(42.6% 0.118 359.2)
-
Step 900
900 (this color)
#64273E
oklch(36.8% 0.092 359)
-
Step 950
950
#3C1926
oklch(26.9% 0.058 358.2)
#64273E 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) | #31353F | 0.102 |
| Deuteranopia (no green cones) | #41403D | 0.092 |
| Tritanopia (no blue cones) | #6C2230 | 0.027 |
| Achromatopsia (no color) | #3C3C3C | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64273E
#64273E
oklch(36.8% 0.092 359)
- #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 #64273E, 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 0.054
- Grape Purple #5D1451 ΔE 0.062
- Bordeaux #7B002C ΔE 0.062
- Wine Red #7B0323 ΔE 0.065
- Burgundy #610023 ΔE 0.066
- Velvet #750851 ΔE 0.066
- Wine #80013F ΔE 0.068
Use #64273E 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.