#673F1D
Closest named color: Mud Brown (#60460F). oklch(40.8% 0.074 58.8), rgb(103, 63, 29).
Aa
White text reads best on this color (9.10:1).
About this color
#673F1D is a dark, moderately saturated brown. In OKLCH its lightness is 41%, its chroma 0.074 and its hue 59°. 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 9.10:1.
| Hue family | Browns |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.074) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.30:1 |
| White text | 9.10:1 |
Values
| HEX | #673F1D |
| RGB | rgb(103, 63, 29) |
| HSL | hsl(28, 56%, 26%) |
| OKLCH | oklch(40.8% 0.074 58.8) |
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 #673F1D | 9.10:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #673F1D | 2.30:1 | Fails | Lc 13.2 | Not readable |
| #673F1D text on white | 9.10:1 | AAA | Lc 90.8 | Preferred for body text |
| #673F1D text on black | 2.30:1 | Fails | Lc -11.6 | 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
#F8F5F2
oklch(97.2% 0.005 67.8)
-
Step 100
100
#F1E8E2
oklch(93.6% 0.013 56.2)
-
Step 200
200
#E6D6CA
oklch(88.6% 0.024 59.4)
-
Step 300
300
#D6BBA6
oklch(81% 0.042 60)
-
Step 400
400
#C29776
oklch(70.9% 0.069 58.9)
-
Step 500
500
#B17C52
oklch(63.1% 0.088 58.7)
-
Step 600
600
#9D6436
oklch(55.6% 0.096 57.9)
-
Step 700
700
#865328
oklch(49.1% 0.089 58.5)
-
Step 800
800 (this color)
#673F1D
oklch(40.8% 0.074 58.8)
-
Step 900
900
#583A21
oklch(37.7% 0.057 59.6)
-
Step 950
950
#342214
oklch(27% 0.037 58.3)
#673F1D 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) | #4B4319 | 0.054 |
| Deuteranopia (no green cones) | #554C1D | 0.049 |
| Tritanopia (no blue cones) | #713637 | 0.053 |
| Achromatopsia (no color) | #484848 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673F1D
#673F1D
oklch(40.8% 0.074 58.8)
- #1C4F6D
#1C4F6D
oklch(40.8% 0.074 238.3)
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 #673F1D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.030
- Purple Brown #673A3F ΔE 0.054
- Chestnut #742802 ΔE 0.055
- Green Brown #544E03 ΔE 0.064
- Milk Chocolate #7F4E1E ΔE 0.066
- Olive Brown #645403 ΔE 0.069
- Rust Brown #8B3103 ΔE 0.073
- Medium Brown #7F5112 ΔE 0.073
Use #673F1D 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.