#641737
Closest named color: Merlot (#730039). oklch(34.5% 0.113 359.8), rgb(100, 23, 55).
Aa
White text reads best on this color (12.21:1).
About this color
#641737 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.113 and its hue 360°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.036 away. White text reads best on it, at 12.21:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.113) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.71:1 |
| White text | 12.21:1 |
Values
| HEX | #641737 |
| RGB | rgb(100, 23, 55) |
| HSL | hsl(335, 63%, 24%) |
| OKLCH | oklch(34.5% 0.113 359.8) |
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 #641737 | 12.21:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #641737 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #641737 text on white | 12.21:1 | AAA | Lc 96.9 | Preferred for body text |
| #641737 text on black | 1.71:1 | 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
#FCF2F5
oklch(97% 0.011 357)
-
Step 100
100
#F9E3E9
oklch(93.5% 0.025 359.2)
-
Step 200
200
#F5CDD8
oklch(88.6% 0.047 359.7)
-
Step 300
300
#EFAABE
oklch(80.9% 0.085 0.2)
-
Step 400
400
#E37A9D
oklch(70.6% 0.135 359.9)
-
Step 500
500
#D85386
oklch(63.1% 0.173 359.5)
-
Step 600
600
#C3316F
oklch(55.5% 0.188 359.8)
-
Step 700
700
#A8225D
oklch(49.1% 0.174 359.8)
-
Step 800
800
#891F4C
oklch(42.8% 0.145 359.9)
-
Step 900
900 (this color)
#641737
oklch(34.5% 0.113 359.8)
-
Step 950
950
#411525
oklch(27.1% 0.071 0.3)
#641737 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) | #272C38 | 0.127 |
| Deuteranopia (no green cones) | #3C3B35 | 0.115 |
| Tritanopia (no blue cones) | #6D0C25 | 0.034 |
| Achromatopsia (no color) | #353535 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #641737
#641737
oklch(34.5% 0.113 359.8)
- #00443A
#00443A
oklch(34.6% 0.063 178.9)
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 #641737, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.036
- Burgundy #610023 ΔE 0.039
- Claret #680018 ΔE 0.047
- Bordeaux #7B002C ΔE 0.052
- Grape Purple #5D1451 ΔE 0.052
- Wine Red #7B0323 ΔE 0.057
- Velvet #750851 ΔE 0.059
- Wine #80013F ΔE 0.061
Use #641737 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.