#673D38
Closest named color: Purple Brown (#673A3F). oklch(40.9% 0.06 27.3), rgb(103, 61, 56).
Aa
White text reads best on this color (9.12:1).
About this color
#673D38 is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.060 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.016 away. White text reads best on it, at 9.12:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.060) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.30:1 |
| White text | 9.12:1 |
Values
| HEX | #673D38 |
| RGB | rgb(103, 61, 56) |
| HSL | hsl(6, 30%, 31%) |
| OKLCH | oklch(40.9% 0.06 27.3) |
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 #673D38 | 9.12:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #673D38 | 2.30:1 | Fails | Lc 13.1 | Not readable |
| #673D38 text on white | 9.12:1 | AAA | Lc 90.8 | Preferred for body text |
| #673D38 text on black | 2.30:1 | Fails | Lc -11.5 | 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 800.
-
Step 50
50
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F1E7E6
oklch(93.6% 0.011 24.3)
-
Step 200
200
#E6D5D2
oklch(88.6% 0.019 29.6)
-
Step 300
300
#D7B9B4
oklch(81% 0.035 29)
-
Step 400
400
#C1948E
oklch(70.7% 0.055 27.2)
-
Step 500
500
#B17972
oklch(63.1% 0.072 27.2)
-
Step 600
600
#9C615A
oklch(55.6% 0.078 27.2)
-
Step 700
700
#85504A
oklch(49% 0.073 27)
-
Step 800
800 (this color)
#673D38
oklch(40.9% 0.06 27.3)
-
Step 900
900
#583834
oklch(37.7% 0.047 27.3)
-
Step 950
950
#34211E
oklch(27.1% 0.03 29.2)
#673D38 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) | #464337 | 0.062 |
| Deuteranopia (no green cones) | #504B37 | 0.057 |
| Tritanopia (no blue cones) | #6F373C | 0.024 |
| Achromatopsia (no color) | #484848 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673D38
#673D38
oklch(40.9% 0.06 27.3)
- #18535B
#18535B
oklch(40.9% 0.06 208)
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 #673D38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.016
- Brownish Purple #76424E ΔE 0.046
- Chestnut #742802 ΔE 0.063
- Mud Brown #60460F ΔE 0.064
- Charcoal Grey #3C4142 ΔE 0.077
- Red Brown #8B2E16 ΔE 0.077
- Rust Brown #8B3103 ΔE 0.081
- Milk Chocolate #7F4E1E ΔE 0.082
Use #673D38 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.