#673F39
Closest named color: Purple Brown (#673A3F). oklch(41.3% 0.057 29), rgb(103, 63, 57).
Aa
White text reads best on this color (8.94:1).
About this color
#673F39 is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.057 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.020 away. White text reads best on it, at 8.94:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.057) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #673F39 |
| RGB | rgb(103, 63, 57) |
| HSL | hsl(8, 29%, 31%) |
| OKLCH | oklch(41.3% 0.057 29) |
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 #673F39 | 8.94:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #673F39 | 2.34:1 | Fails | Lc 13.6 | Not readable |
| #673F39 text on white | 8.94:1 | AAA | Lc 90.4 | Preferred for body text |
| #673F39 text on black | 2.34:1 | Fails | Lc -11.9 | 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
#F0E8E6
oklch(93.7% 0.009 34.3)
-
Step 200
200
#E5D5D2
oklch(88.5% 0.018 30.3)
-
Step 300
300
#D6B9B4
oklch(80.9% 0.034 29.4)
-
Step 400
400
#C0948D
oklch(70.6% 0.054 28.9)
-
Step 500
500
#AF7A72
oklch(63.1% 0.068 28.7)
-
Step 600
600
#9A625A
oklch(55.5% 0.075 28.5)
-
Step 700
700
#84514A
oklch(49.1% 0.07 28.3)
-
Step 800
800 (this color)
#673F39
oklch(41.3% 0.057 29)
-
Step 900
900
#573834
oklch(37.6% 0.045 27.5)
-
Step 950
950
#33211E
oklch(26.9% 0.029 29.6)
#673F39 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) | #484538 | 0.058 |
| Deuteranopia (no green cones) | #514D38 | 0.056 |
| Tritanopia (no blue cones) | #6F3A3E | 0.023 |
| Achromatopsia (no color) | #494949 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673F39
#673F39
oklch(41.3% 0.057 29)
- #1E545C
#1E545C
oklch(41.4% 0.057 208.7)
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 #673F39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.020
- Brownish Purple #76424E ΔE 0.045
- Mud Brown #60460F ΔE 0.062
- Chestnut #742802 ΔE 0.067
- Charcoal Grey #3C4142 ΔE 0.077
- Milk Chocolate #7F4E1E ΔE 0.078
- Red Brown #8B2E16 ΔE 0.078
- Rust Brown #8B3103 ΔE 0.081
Use #673F39 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.