#673A17
Closest named color: Mud Brown (#60460F). oklch(39.7% 0.08 55.4), rgb(103, 58, 23).
Aa
White text reads best on this color (9.57:1).
About this color
#673A17 is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.080 and its hue 55°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.038 away. White text reads best on it, at 9.57:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #673A17 |
| RGB | rgb(103, 58, 23) |
| HSL | hsl(26, 63%, 25%) |
| OKLCH | oklch(39.7% 0.08 55.4) |
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 #673A17 | 9.57:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #673A17 | 2.19:1 | Fails | Lc 12.1 | Not readable |
| #673A17 text on white | 9.57:1 | AAA | Lc 91.9 | Preferred for body text |
| #673A17 text on black | 2.19:1 | Fails | Lc -10.5 | 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
#FAF4F0
oklch(97.1% 0.008 56.3)
-
Step 100
100
#F4E7DF
oklch(93.6% 0.018 54)
-
Step 200
200
#EBD4C5
oklch(88.5% 0.033 55.3)
-
Step 300
300
#E0B79C
oklch(80.9% 0.06 55.1)
-
Step 400
400
#CF9165
oklch(70.8% 0.096 55.9)
-
Step 500
500
#C17438
oklch(63.2% 0.122 55.9)
-
Step 600
600
#AC5A0C
oklch(55.5% 0.133 55.3)
-
Step 700
700
#934A00
oklch(49.1% 0.121 55.1)
-
Step 800
800
#783D05
oklch(42.7% 0.102 55.5)
-
Step 900
900 (this color)
#673A17
oklch(39.7% 0.08 55.4)
-
Step 950
950
#391F0C
oklch(27% 0.05 54.8)
#673A17 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) | #473F13 | 0.063 |
| Deuteranopia (no green cones) | #524917 | 0.056 |
| Tritanopia (no blue cones) | #713033 | 0.055 |
| Achromatopsia (no color) | #454545 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673A17
#673A17
oklch(39.7% 0.08 55.4)
- #0B4D6C
#0B4D6C
oklch(39.8% 0.08 235.7)
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 #673A17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.038
- Chestnut #742802 ΔE 0.044
- Purple Brown #673A3F ΔE 0.054
- Rust Brown #8B3103 ΔE 0.072
- Green Brown #544E03 ΔE 0.072
- Red Brown #8B2E16 ΔE 0.074
- Milk Chocolate #7F4E1E ΔE 0.075
- Olive Brown #645403 ΔE 0.079
Use #673A17 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.