#553537
Closest named color: Purple Brown (#673A3F). oklch(36.8% 0.046 15.5), rgb(85, 53, 55).
Aa
White text reads best on this color (10.76:1).
About this color
#553537 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.046 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.041 away. White text reads best on it, at 10.76:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.046) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.95:1 |
| White text | 10.76:1 |
Values
| HEX | #553537 |
| RGB | rgb(85, 53, 55) |
| HSL | hsl(356, 23%, 27%) |
| OKLCH | oklch(36.8% 0.046 15.5) |
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 #553537 | 10.76:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #553537 | 1.95:1 | Fails | Lc 9.1 | Not readable |
| #553537 text on white | 10.76:1 | AAA | Lc 94.8 | Preferred for body text |
| #553537 text on black | 1.95:1 | Fails | Lc -7.8 | 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E7E7
oklch(93.5% 0.01 17.3)
-
Step 200
200
#E6D4D5
oklch(88.5% 0.02 13.7)
-
Step 300
300
#D6B8B9
oklch(80.9% 0.035 15.6)
-
Step 400
400
#C19395
oklch(70.7% 0.056 15.7)
-
Step 500
500
#B0787B
oklch(63.1% 0.071 15.7)
-
Step 600
600
#9B6064
oklch(55.5% 0.077 15.5)
-
Step 700
700
#844F53
oklch(49% 0.072 15.2)
-
Step 800
800
#6C4144
oklch(42.7% 0.06 15.4)
-
Step 900
900 (this color)
#553537
oklch(36.8% 0.046 15.5)
-
Step 950
950
#332122
oklch(27.1% 0.028 15.4)
#553537 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) | #3B3A37 | 0.049 |
| Deuteranopia (no green cones) | #424036 | 0.047 |
| Tritanopia (no blue cones) | #5B3236 | 0.014 |
| Achromatopsia (no color) | #3E3E3E | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553537
#553537
oklch(36.8% 0.046 15.5)
- #1D4747
#1D4747
oklch(36.8% 0.047 195.3)
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 #553537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.053
- Onyx #343A40 ΔE 0.060
- Chestnut #742802 ΔE 0.079
- Brownish Purple #76424E ΔE 0.083
- Gunmetal #293241 ΔE 0.083
- Mud Brown #60460F ΔE 0.084
- Charcoal #264653 ΔE 0.087
Use #553537 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.