#673F3C
Closest named color: Purple Brown (#673A3F). oklch(41.4% 0.057 24.5), rgb(103, 63, 60).
Aa
White text reads best on this color (8.92:1).
About this color
#673F3C is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.057 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.016 away. White text reads best on it, at 8.92:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.057) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #673F3C |
| RGB | rgb(103, 63, 60) |
| HSL | hsl(4, 26%, 32%) |
| OKLCH | oklch(41.4% 0.057 24.5) |
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 #673F3C | 8.92:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #673F3C | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #673F3C text on white | 8.92:1 | AAA | Lc 90.3 | Preferred for body text |
| #673F3C text on black | 2.35:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E7E7
oklch(93.5% 0.01 17.3)
-
Step 200
200
#E5D5D3
oklch(88.5% 0.018 26.1)
-
Step 300
300
#D5B9B6
oklch(80.9% 0.033 25.1)
-
Step 400
400
#C09490
oklch(70.7% 0.054 24.5)
-
Step 500
500
#AF7A75
oklch(63.2% 0.067 25.2)
-
Step 600
600
#9A625E
oklch(55.6% 0.074 24.2)
-
Step 700
700
#83514D
oklch(49% 0.068 24.8)
-
Step 800
800 (this color)
#673F3C
oklch(41.4% 0.057 24.5)
-
Step 900
900
#573836
oklch(37.7% 0.045 23.5)
-
Step 950
950
#332120
oklch(27% 0.028 22.7)
#673F3C 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) | #47453C | 0.059 |
| Deuteranopia (no green cones) | #514D3B | 0.056 |
| Tritanopia (no blue cones) | #6F3A3E | 0.021 |
| Achromatopsia (no color) | #4A4A4A | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673F3C
#673F3C
oklch(41.4% 0.057 24.5)
- #1E545A
#1E545A
oklch(41.3% 0.057 205.4)
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 #673F3C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.016
- Brownish Purple #76424E ΔE 0.041
- Mud Brown #60460F ΔE 0.066
- Chestnut #742802 ΔE 0.069
- Charcoal Grey #3C4142 ΔE 0.077
- Red Brown #8B2E16 ΔE 0.080
- Milk Chocolate #7F4E1E ΔE 0.080
- Rust Brown #8B3103 ΔE 0.083
Use #673F3C 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.