#673F1C
Closest named color: Mud Brown (#60460F). oklch(40.8% 0.074 59.4), rgb(103, 63, 28).
Aa
White text reads best on this color (9.11:1).
About this color
#673F1C 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 0.029 away. White text reads best on it, at 9.11:1.
| 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 | 9.11:1 |
Values
| HEX | #673F1C |
| RGB | rgb(103, 63, 28) |
| HSL | hsl(28, 57%, 26%) |
| OKLCH | oklch(40.8% 0.074 59.4) |
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 #673F1C | 9.11:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #673F1C | 2.30:1 | Fails | Lc 13.2 | Not readable |
| #673F1C text on white | 9.11:1 | AAA | Lc 90.8 | Preferred for body text |
| #673F1C 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
#D7BBA5
oklch(81% 0.044 60.3)
-
Step 400
400
#C29775
oklch(70.8% 0.07 59.7)
-
Step 500
500
#B17C51
oklch(63% 0.088 59.3)
-
Step 600
600
#9D6434
oklch(55.6% 0.097 58.8)
-
Step 700
700
#865327
oklch(49.1% 0.09 59)
-
Step 800
800 (this color)
#673F1C
oklch(40.8% 0.074 59.4)
-
Step 900
900
#583A20
oklch(37.7% 0.058 60.6)
-
Step 950
950
#342214
oklch(27% 0.037 58.3)
#673F1C 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) | #4B4318 | 0.054 |
| Deuteranopia (no green cones) | #554C1C | 0.049 |
| Tritanopia (no blue cones) | #713637 | 0.054 |
| Achromatopsia (no color) | #484848 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673F1C
#673F1C
oklch(40.8% 0.074 59.4)
- #1C4F6E
#1C4F6E
oklch(40.9% 0.075 239.2)
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 #673F1C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.029
- Chestnut #742802 ΔE 0.055
- Purple Brown #673A3F ΔE 0.055
- Green Brown #544E03 ΔE 0.063
- Milk Chocolate #7F4E1E ΔE 0.065
- Olive Brown #645403 ΔE 0.068
- Rust Brown #8B3103 ΔE 0.073
- Medium Brown #7F5112 ΔE 0.073
Use #673F1C 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.