#673D18
Closest named color: Mud Brown (#60460F). oklch(40.3% 0.078 58.9), rgb(103, 61, 24).
Aa
White text reads best on this color (9.30:1).
About this color
#673D18 is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.078 and its hue 59°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.031 away. White text reads best on it, at 9.30:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #673D18 |
| RGB | rgb(103, 61, 24) |
| HSL | hsl(28, 62%, 25%) |
| OKLCH | oklch(40.3% 0.078 58.9) |
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 #673D18 | 9.30:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #673D18 | 2.25:1 | Fails | Lc 12.7 | Not readable |
| #673D18 text on white | 9.30:1 | AAA | Lc 91.2 | Preferred for body text |
| #673D18 text on black | 2.25:1 | Fails | Lc -11.1 | 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
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F1E8E1
oklch(93.6% 0.014 60.6)
-
Step 200
200
#E6D6C9
oklch(88.6% 0.025 61.6)
-
Step 300
300
#D8BAA4
oklch(80.9% 0.046 58.3)
-
Step 400
400
#C39673
oklch(70.7% 0.073 59.1)
-
Step 500
500
#B37B4E
oklch(63% 0.093 58.8)
-
Step 600
600
#9E6331
oklch(55.5% 0.1 58.7)
-
Step 700
700
#875223
oklch(49% 0.094 59.2)
-
Step 800
800 (this color)
#673D18
oklch(40.3% 0.078 58.9)
-
Step 900
900
#59391F
oklch(37.6% 0.06 58.6)
-
Step 950
950
#342213
oklch(27% 0.037 60.1)
#673D18 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) | #4A4114 | 0.057 |
| Deuteranopia (no green cones) | #544B18 | 0.052 |
| Tritanopia (no blue cones) | #713435 | 0.055 |
| Achromatopsia (no color) | #474747 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673D18
#673D18
oklch(40.3% 0.078 58.9)
- #174E6E
#174E6E
oklch(40.4% 0.078 238.9)
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 #673D18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.031
- Chestnut #742802 ΔE 0.050
- Purple Brown #673A3F ΔE 0.056
- Green Brown #544E03 ΔE 0.065
- Milk Chocolate #7F4E1E ΔE 0.069
- Olive Brown #645403 ΔE 0.071
- Rust Brown #8B3103 ΔE 0.072
- Red Brown #8B2E16 ΔE 0.076
Use #673D18 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.