#642540
Closest named color: Merlot (#730039). oklch(36.6% 0.096 356.2), rgb(100, 37, 64).
Aa
White text reads best on this color (11.16:1).
About this color
#642540 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.096 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.051 away. White text reads best on it, at 11.16:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.096) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.88:1 |
| White text | 11.16:1 |
Values
| HEX | #642540 |
| RGB | rgb(100, 37, 64) |
| HSL | hsl(334, 46%, 27%) |
| OKLCH | oklch(36.6% 0.096 356.2) |
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 #642540 | 11.16:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #642540 | 1.88:1 | Fails | Lc 8.6 | Not readable |
| #642540 text on white | 11.16:1 | AAA | Lc 95.3 | Preferred for body text |
| #642540 text on black | 1.88:1 | Fails | Lc -7.4 | 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
#F6E4EA
oklch(93.5% 0.021 355.2)
-
Step 200
200
#F0CFDA
oklch(88.5% 0.04 355.8)
-
Step 300
300
#E8AEC2
oklch(81% 0.072 356.3)
-
Step 400
400
#D981A3
oklch(70.7% 0.115 355.8)
-
Step 500
500
#CC5F8C
oklch(63.1% 0.146 356.2)
-
Step 600
600
#B84276
oklch(55.7% 0.16 356.3)
-
Step 700
700
#9E3363
oklch(49.2% 0.149 356.4)
-
Step 800
800
#802B51
oklch(42.7% 0.123 356)
-
Step 900
900 (this color)
#642540
oklch(36.6% 0.096 356.2)
-
Step 950
950
#3D1827
oklch(27% 0.061 356.5)
#642540 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) | #2F3441 | 0.106 |
| Deuteranopia (no green cones) | #40403F | 0.097 |
| Tritanopia (no blue cones) | #6C202F | 0.031 |
| Achromatopsia (no color) | #3B3B3B | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642540
#642540
oklch(36.6% 0.096 356.2)
- #004A3D
#004A3D
oklch(36.5% 0.068 175.8)
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 #642540, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.051
- Grape Purple #5D1451 ΔE 0.056
- Purple Brown #673A3F ΔE 0.056
- Velvet #750851 ΔE 0.061
- Bordeaux #7B002C ΔE 0.062
- Burgundy #610023 ΔE 0.064
- Wine #80013F ΔE 0.065
- Wine Red #7B0323 ΔE 0.066
Use #642540 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.