#673B3D
Closest named color: Purple Brown (#673A3F). oklch(40.6% 0.062 17.3), rgb(103, 59, 61).
Aa
White text reads best on this color (9.25:1).
About this color
#673B3D is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.062 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.005 away. White text reads best on it, at 9.25:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.062) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.26:1 |
| White text | 9.25:1 |
Values
| HEX | #673B3D |
| RGB | rgb(103, 59, 61) |
| HSL | hsl(357, 27%, 32%) |
| OKLCH | oklch(40.6% 0.062 17.3) |
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 #673B3D | 9.25:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #673B3D | 2.26:1 | Fails | Lc 12.8 | Not readable |
| #673B3D text on white | 9.25:1 | AAA | Lc 91.2 | Preferred for body text |
| #673B3D text on black | 2.26:1 | Fails | Lc -11.2 | 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
#F1E7E7
oklch(93.6% 0.011 17.4)
-
Step 200
200
#E6D4D4
oklch(88.5% 0.02 17.5)
-
Step 300
300
#D7B8B8
oklch(80.9% 0.036 17.9)
-
Step 400
400
#C29293
oklch(70.6% 0.058 17.2)
-
Step 500
500
#B27779
oklch(63.1% 0.074 17.2)
-
Step 600
600
#9D5F62
oklch(55.5% 0.081 16.9)
-
Step 700
700
#864E51
oklch(49% 0.076 16.8)
-
Step 800
800 (this color)
#673B3D
oklch(40.6% 0.062 17.3)
-
Step 900
900
#593738
oklch(37.8% 0.049 17.7)
-
Step 950
950
#342021
oklch(26.9% 0.031 16.1)
#673B3D 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) | #44423D | 0.066 |
| Deuteranopia (no green cones) | #4E4B3C | 0.063 |
| Tritanopia (no blue cones) | #6F363C | 0.019 |
| Achromatopsia (no color) | #474747 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673B3D
#673B3D
oklch(40.6% 0.062 17.3)
- #125455
#125455
oklch(40.7% 0.063 196.5)
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 #673B3D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.005
- Brownish Purple #76424E ΔE 0.043
- Chestnut #742802 ΔE 0.067
- Mud Brown #60460F ΔE 0.075
- Charcoal Grey #3C4142 ΔE 0.078
- Red Brown #8B2E16 ΔE 0.080
- Rust Brown #8B3103 ΔE 0.086
- Milk Chocolate #7F4E1E ΔE 0.090
Use #673B3D 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.