#640536
Closest named color: Burgundy (#610023). oklch(33.1% 0.13 357.4), rgb(100, 5, 54).
Aa
White text reads best on this color (12.98:1).
About this color
#640536 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.130 and its hue 357°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.032 away. White text reads best on it, at 12.98:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.130) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.61:1 |
| White text | 12.98:1 |
Values
| HEX | #640536 |
| RGB | rgb(100, 5, 54) |
| HSL | hsl(329, 90%, 21%) |
| OKLCH | oklch(33.1% 0.13 357.4) |
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 #640536 | 12.98:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #640536 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #640536 text on white | 12.98:1 | AAA | Lc 97.6 | Preferred for body text |
| #640536 text on black | 1.61:1 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#FBE3EA
oklch(93.7% 0.028 358)
-
Step 200
200
#F8CBD9
oklch(88.5% 0.054 357.7)
-
Step 300
300
#F4A6C1
oklch(80.8% 0.098 357.1)
-
Step 400
400
#EB73A1
oklch(70.8% 0.155 357.6)
-
Step 500
500
#E0468A
oklch(63% 0.198 357.4)
-
Step 600
600
#CC1774
oklch(55.7% 0.217 357.5)
-
Step 700
700
#AF0061
oklch(49% 0.2 357.5)
-
Step 800
800
#8F0C50
oklch(42.8% 0.167 357.3)
-
Step 900
900 (this color)
#640536
oklch(33.1% 0.13 357.4)
-
Step 950
950
#441027
oklch(27% 0.083 357.1)
#640536 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) | #1F2637 | 0.147 |
| Deuteranopia (no green cones) | #383734 | 0.130 |
| Tritanopia (no blue cones) | #6D001E | 0.045 |
| Achromatopsia (no color) | #313131 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #640536
#640536
oklch(33.1% 0.13 357.4)
- #004035
#004035
oklch(33.2% 0.062 176.6)
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 #640536, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.032
- Merlot #730039 ΔE 0.034
- Claret #680018 ΔE 0.049
- Grape Purple #5D1451 ΔE 0.050
- Bordeaux #7B002C ΔE 0.056
- Velvet #750851 ΔE 0.058
- Wine Red #7B0323 ΔE 0.064
- Wine #80013F ΔE 0.064
Use #640536 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.