#673A03
Closest named color: Mud Brown (#60460F). oklch(39.6% 0.088 63), rgb(103, 58, 3).
Aa
White text reads best on this color (9.61:1).
About this color
#673A03 is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.088 and its hue 63°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.033 away. White text reads best on it, at 9.61:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.088) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.18:1 |
| White text | 9.61:1 |
Values
| HEX | #673A03 |
| RGB | rgb(103, 58, 3) |
| HSL | hsl(33, 94%, 21%) |
| OKLCH | oklch(39.6% 0.088 63) |
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 #673A03 | 9.61:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #673A03 | 2.18:1 | Fails | Lc 12.0 | Not readable |
| #673A03 text on white | 9.61:1 | AAA | Lc 91.9 | Preferred for body text |
| #673A03 text on black | 2.18:1 | 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
#FAF4EF
oklch(97% 0.009 62.6)
-
Step 100
100
#F4E7DD
oklch(93.6% 0.02 60.2)
-
Step 200
200
#EBD4C1
oklch(88.4% 0.036 61.9)
-
Step 300
300
#E0B895
oklch(80.9% 0.066 62.9)
-
Step 400
400
#CF9157
oklch(70.6% 0.106 62.8)
-
Step 500
500
#C2741A
oklch(63.1% 0.136 62.7)
-
Step 600
600
#A66000
oklch(55.7% 0.127 63.3)
-
Step 700
700
#8C5000
oklch(49.1% 0.112 63.2)
-
Step 800
800
#734100
oklch(42.7% 0.097 63.4)
-
Step 900
900 (this color)
#673A03
oklch(39.6% 0.088 63)
-
Step 950
950
#391F04
oklch(26.9% 0.056 62.6)
#673A03 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) | #483E00 | 0.061 |
| Deuteranopia (no green cones) | #534904 | 0.055 |
| Tritanopia (no blue cones) | #722F31 | 0.067 |
| Achromatopsia (no color) | #454545 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673A03
#673A03
oklch(39.6% 0.088 63)
- #0D4B72
#0D4B72
oklch(39.7% 0.088 242.8)
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 #673A03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.033
- Chestnut #742802 ΔE 0.047
- Green Brown #544E03 ΔE 0.065
- Purple Brown #673A3F ΔE 0.069
- Olive Brown #645403 ΔE 0.074
- Rust Brown #8B3103 ΔE 0.074
- Milk Chocolate #7F4E1E ΔE 0.076
- Red Brown #8B2E16 ΔE 0.079
Use #673A03 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.