#673C25
Closest named color: Purple Brown (#673A3F). oklch(40.3% 0.07 48.1), rgb(103, 60, 37).
Aa
White text reads best on this color (9.33:1).
About this color
#673C25 is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.070 and its hue 48°. 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 9.33:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.070) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.24:1 |
| White text | 9.33:1 |
Values
| HEX | #673C25 |
| RGB | rgb(103, 60, 37) |
| HSL | hsl(21, 47%, 27%) |
| OKLCH | oklch(40.3% 0.07 48.1) |
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 #673C25 | 9.33:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #673C25 | 2.24:1 | Fails | Lc 12.6 | Not readable |
| #673C25 text on white | 9.33:1 | AAA | Lc 91.3 | Preferred for body text |
| #673C25 text on black | 2.24:1 | Fails | Lc -11.0 | 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
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F1E8E3
oklch(93.7% 0.012 51.3)
-
Step 200
200
#E7D5CC
oklch(88.5% 0.024 48.4)
-
Step 300
300
#D8B9AA
oklch(80.8% 0.041 47.4)
-
Step 400
400
#C3957D
oklch(70.7% 0.065 48.8)
-
Step 500
500
#B37A5C
oklch(63.1% 0.083 48.5)
-
Step 600
600
#9F6242
oklch(55.6% 0.092 47.9)
-
Step 700
700
#875134
oklch(49.1% 0.084 48.2)
-
Step 800
800 (this color)
#673C25
oklch(40.3% 0.07 48.1)
-
Step 900
900
#593827
oklch(37.6% 0.055 47.8)
-
Step 950
950
#342117
oklch(26.9% 0.034 48.6)
#673C25 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) | #484123 | 0.060 |
| Deuteranopia (no green cones) | #524A25 | 0.054 |
| Tritanopia (no blue cones) | #703436 | 0.041 |
| Achromatopsia (no color) | #474747 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673C25
#673C25
oklch(40.3% 0.07 48.1)
- #134F66
#134F66
oklch(40.2% 0.07 228.6)
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 #673C25, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.041
- Mud Brown #60460F ΔE 0.044
- Chestnut #742802 ΔE 0.049
- Brownish Purple #76424E ΔE 0.067
- Rust Brown #8B3103 ΔE 0.073
- Red Brown #8B2E16 ΔE 0.073
- Milk Chocolate #7F4E1E ΔE 0.073
- Green Brown #544E03 ΔE 0.077
Use #673C25 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.