#673B00
Closest named color: Mud Brown (#60460F). oklch(39.7% 0.089 65), rgb(103, 59, 0).
Aa
White text reads best on this color (9.53:1).
About this color
#673B00 is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.089 and its hue 65°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.030 away. White text reads best on it, at 9.53:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.089) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #673B00 |
| RGB | rgb(103, 59, 0) |
| HSL | hsl(34, 100%, 20%) |
| OKLCH | oklch(39.7% 0.089 65) |
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 #673B00 | 9.53:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #673B00 | 2.20:1 | Fails | Lc 12.2 | Not readable |
| #673B00 text on white | 9.53:1 | AAA | Lc 91.7 | Preferred for body text |
| #673B00 text on black | 2.20:1 | Fails | Lc -10.7 | 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
#FAF4EF
oklch(97% 0.009 62.6)
-
Step 100
100
#F3E8DD
oklch(93.7% 0.019 67.6)
-
Step 200
200
#EBD5C0
oklch(88.6% 0.037 66)
-
Step 300
300
#DFB893
oklch(80.8% 0.067 65.1)
-
Step 400
400
#CF9255
oklch(70.7% 0.107 64.6)
-
Step 500
500
#C17512
oklch(63.1% 0.137 64.8)
-
Step 600
600
#A46100
oklch(55.6% 0.125 64.9)
-
Step 700
700
#8A5100
oklch(49% 0.11 65.1)
-
Step 800
800
#724200
oklch(42.7% 0.096 65.1)
-
Step 900
900 (this color)
#673B00
oklch(39.7% 0.089 65)
-
Step 950
950
#392003
oklch(27.1% 0.057 65.6)
#673B00 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) | #493F00 | 0.059 |
| Deuteranopia (no green cones) | #534901 | 0.053 |
| Tritanopia (no blue cones) | #723031 | 0.068 |
| Achromatopsia (no color) | #454545 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673B00
#673B00
oklch(39.7% 0.089 65)
- #114B73
#114B73
oklch(39.8% 0.088 244.3)
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 #673B00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.030
- Chestnut #742802 ΔE 0.050
- Green Brown #544E03 ΔE 0.062
- Olive Brown #645403 ΔE 0.070
- Purple Brown #673A3F ΔE 0.071
- Milk Chocolate #7F4E1E ΔE 0.074
- Rust Brown #8B3103 ΔE 0.075
- Medium Brown #7F5112 ΔE 0.079
Use #673B00 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.