#553540
Closest named color: Purple Brown (#673A3F). oklch(37.1% 0.049 357.5), rgb(85, 53, 64).
Aa
White text reads best on this color (10.66:1).
About this color
#553540 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.049 and its hue 358°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.040 away. White text reads best on it, at 10.66:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.049) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.96:1 |
| White text | 10.66:1 |
Values
| HEX | #553540 |
| RGB | rgb(85, 53, 64) |
| HSL | hsl(339, 23%, 27%) |
| OKLCH | oklch(37.1% 0.049 357.5) |
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 #553540 | 10.66:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #553540 | 1.96:1 | Fails | Lc 9.3 | Not readable |
| #553540 text on white | 10.66:1 | AAA | Lc 94.6 | Preferred for body text |
| #553540 text on black | 1.96:1 | Fails | Lc -8.0 | 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
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#F0E7EA
oklch(93.6% 0.011 354.9)
-
Step 200
200
#E5D4D9
oklch(88.5% 0.02 357.7)
-
Step 300
300
#D5B7C1
oklch(80.8% 0.037 355.9)
-
Step 400
400
#C092A1
oklch(70.8% 0.059 357.3)
-
Step 500
500
#AF778A
oklch(63.2% 0.074 357.4)
-
Step 600
600
#9A5F73
oklch(55.7% 0.081 358.2)
-
Step 700
700
#834E61
oklch(49.1% 0.075 357.2)
-
Step 800
800
#6B404F
oklch(42.7% 0.063 357.7)
-
Step 900
900 (this color)
#553540
oklch(37.1% 0.049 357.5)
-
Step 950
950
#332026
oklch(27% 0.031 358.8)
#553540 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) | #393B40 | 0.053 |
| Deuteranopia (no green cones) | #41403F | 0.048 |
| Tritanopia (no blue cones) | #5A3339 | 0.014 |
| Achromatopsia (no color) | #3E3E3E | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553540
#553540
oklch(37.1% 0.049 357.5)
- #204840
#204840
oklch(37% 0.048 178.8)
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 #553540, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.055
- Onyx #343A40 ΔE 0.060
- Brownish Purple #76424E ΔE 0.079
- Gunmetal #293241 ΔE 0.082
- Charcoal #264653 ΔE 0.084
- Dark Grey Blue #29465B ΔE 0.085
- Space Cadet #2B2D42 ΔE 0.086
Use #553540 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.