#543740
Closest named color: Purple Brown (#673A3F). oklch(37.4% 0.043 359.2), rgb(84, 55, 64).
Aa
White text reads best on this color (10.51:1).
About this color
#543740 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.043 and its hue 359°. 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 10.51:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.043) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.99:1 |
| White text | 10.51:1 |
Values
| HEX | #543740 |
| RGB | rgb(84, 55, 64) |
| HSL | hsl(341, 21%, 27%) |
| OKLCH | oklch(37.4% 0.043 359.2) |
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 #543740 | 10.51:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #543740 | 1.99:1 | Fails | Lc 9.6 | Not readable |
| #543740 text on white | 10.51:1 | AAA | Lc 94.3 | Preferred for body text |
| #543740 text on black | 1.99:1 | Fails | Lc -8.3 | 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
#F0E7E9
oklch(93.6% 0.01 2)
-
Step 200
200
#E4D4D9
oklch(88.4% 0.019 356.5)
-
Step 300
300
#D3B8C0
oklch(80.8% 0.033 358)
-
Step 400
400
#BD93A0
oklch(70.6% 0.053 358.1)
-
Step 500
500
#AC7988
oklch(63.2% 0.067 359.9)
-
Step 600
600
#966172
oklch(55.5% 0.072 358.9)
-
Step 700
700
#805060
oklch(49% 0.068 358.4)
-
Step 800
800
#68424E
oklch(42.7% 0.055 359.2)
-
Step 900
900 (this color)
#543740
oklch(37.4% 0.043 359.2)
-
Step 950
950
#322126
oklch(27.1% 0.027 359.8)
#543740 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) | #3B3C40 | 0.047 |
| Deuteranopia (no green cones) | #42413F | 0.043 |
| Tritanopia (no blue cones) | #59353A | 0.013 |
| Achromatopsia (no color) | #3F3F3F | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543740
#543740
oklch(37.4% 0.043 359.2)
- #254841
#254841
oklch(37.3% 0.043 179.4)
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 #543740, 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 0.050
- Onyx #343A40 ΔE 0.057
- Brownish Purple #76424E ΔE 0.078
- Charcoal #264653 ΔE 0.080
- Dark Grey Blue #29465B ΔE 0.081
- Gunmetal #293241 ΔE 0.081
- Dark Slate Gray #2F4F4F ΔE 0.086
Use #543740 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.