#673B23
Closest named color: Purple Brown (#673A3F). oklch(40.1% 0.072 48.4), rgb(103, 59, 35).
Aa
White text reads best on this color (9.43:1).
About this color
#673B23 is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.072 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.042 away. White text reads best on it, at 9.43:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.22:1 |
| White text | 9.43:1 |
Values
| HEX | #673B23 |
| RGB | rgb(103, 59, 35) |
| HSL | hsl(21, 49%, 27%) |
| OKLCH | oklch(40.1% 0.072 48.4) |
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 #673B23 | 9.43:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #673B23 | 2.22:1 | Fails | Lc 12.4 | Not readable |
| #673B23 text on white | 9.43:1 | AAA | Lc 91.6 | Preferred for body text |
| #673B23 text on black | 2.22:1 | Fails | Lc -10.8 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F3E7E1
oklch(93.6% 0.015 48.6)
-
Step 200
200
#EBD4C8
oklch(88.6% 0.03 49.4)
-
Step 300
300
#DFB7A3
oklch(81% 0.054 48)
-
Step 400
400
#CD9071
oklch(70.6% 0.086 47.8)
-
Step 500
500
#BF744B
oklch(63.2% 0.11 48.6)
-
Step 600
600
#AA5B2C
oklch(55.6% 0.12 49)
-
Step 700
700
#924A1F
oklch(49.1% 0.112 48.4)
-
Step 800
800
#773D1C
oklch(42.7% 0.093 48)
-
Step 900
900 (this color)
#673B23
oklch(40.1% 0.072 48.4)
-
Step 950
950
#381F12
oklch(26.9% 0.045 47.6)
#673B23 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) | #474021 | 0.062 |
| Deuteranopia (no green cones) | #524A23 | 0.056 |
| Tritanopia (no blue cones) | #713335 | 0.043 |
| Achromatopsia (no color) | #464646 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673B23
#673B23
oklch(40.1% 0.072 48.4)
- #0F4F66
#0F4F66
oklch(40.1% 0.072 227.8)
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 #673B23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.042
- Mud Brown #60460F ΔE 0.044
- Chestnut #742802 ΔE 0.047
- Brownish Purple #76424E ΔE 0.069
- Rust Brown #8B3103 ΔE 0.072
- Red Brown #8B2E16 ΔE 0.073
- Milk Chocolate #7F4E1E ΔE 0.075
- Green Brown #544E03 ΔE 0.077
Use #673B23 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.