#643848
Closest named color: Purple Brown (#673A3F). oklch(40% 0.066 357.2), rgb(100, 56, 72).
Aa
White text reads best on this color (9.54:1).
About this color
#643848 is a dark, muted red. In OKLCH its lightness is 40%, its chroma 0.066 and its hue 357°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.019 away. White text reads best on it, at 9.54:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | muted (0.066) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.20:1 |
| White text | 9.54:1 |
Values
| HEX | #643848 |
| RGB | rgb(100, 56, 72) |
| HSL | hsl(338, 28%, 31%) |
| OKLCH | oklch(40% 0.066 357.2) |
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 #643848 | 9.54:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #643848 | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #643848 text on white | 9.54:1 | AAA | Lc 91.9 | Preferred for body text |
| #643848 text on black | 2.20:1 | Fails | Lc -10.5 | 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
#F9F4F5
oklch(97.1% 0.006 3.3)
-
Step 100
100
#F2E6EA
oklch(93.6% 0.014 355)
-
Step 200
200
#E9D2D9
oklch(88.5% 0.027 357.3)
-
Step 300
300
#DCB4C1
oklch(80.9% 0.049 356.8)
-
Step 400
400
#C98CA1
oklch(70.6% 0.079 357)
-
Step 500
500
#BA6F8A
oklch(63.1% 0.1 357.3)
-
Step 600
600
#A55674
oklch(55.6% 0.109 357.1)
-
Step 700
700
#8D4661
oklch(49.1% 0.101 357.4)
-
Step 800
800
#733A4F
oklch(42.8% 0.084 357.8)
-
Step 900
900 (this color)
#643848
oklch(40% 0.066 357.2)
-
Step 950
950
#371D27
oklch(26.9% 0.043 355.8)
#643848 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) | #3E4149 | 0.071 |
| Deuteranopia (no green cones) | #494847 | 0.065 |
| Tritanopia (no blue cones) | #6A363E | 0.019 |
| Achromatopsia (no color) | #454545 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643848
#643848
oklch(40% 0.066 357.2)
- #135347
#135347
oklch(39.9% 0.066 177.3)
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 #643848, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.019
- Brownish Purple #76424E ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.077
- Chestnut #742802 ΔE 0.084
- Merlot #730039 ΔE 0.090
- Onyx #343A40 ΔE 0.090
- Bordeaux #7B002C ΔE 0.091
- Red Purple #820747 ΔE 0.091
Use #643848 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.