#673418
Closest named color: Chestnut (#742802). oklch(38.6% 0.083 47.4), rgb(103, 52, 24).
Aa
White text reads best on this color (10.09:1).
About this color
#673418 is a dark, moderately saturated brown. In OKLCH its lightness is 39%, its chroma 0.083 and its hue 47°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.034 away. White text reads best on it, at 10.09:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.083) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.08:1 |
| White text | 10.09:1 |
Values
| HEX | #673418 |
| RGB | rgb(103, 52, 24) |
| HSL | hsl(21, 62%, 25%) |
| OKLCH | oklch(38.6% 0.083 47.4) |
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 #673418 | 10.09:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #673418 | 2.08:1 | Fails | Lc 10.9 | Not readable |
| #673418 text on white | 10.09:1 | AAA | Lc 93.1 | Preferred for body text |
| #673418 text on black | 2.08:1 | Fails | Lc -9.4 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F5E7E0
oklch(93.7% 0.018 48.5)
-
Step 200
200
#EED3C6
oklch(88.6% 0.035 47.4)
-
Step 300
300
#E3B59E
oklch(80.8% 0.062 47.9)
-
Step 400
400
#D48D69
oklch(70.7% 0.1 47.5)
-
Step 500
500
#C76F3F
oklch(63.2% 0.128 47.7)
-
Step 600
600
#B2551B
oklch(55.6% 0.138 47.8)
-
Step 700
700
#99440C
oklch(49% 0.129 47.2)
-
Step 800
800
#7C390F
oklch(42.7% 0.106 47.8)
-
Step 900
900 (this color)
#673418
oklch(38.6% 0.083 47.4)
-
Step 950
950
#3B1E0E
oklch(27.1% 0.052 48.3)
#673418 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) | #423B15 | 0.074 |
| Deuteranopia (no green cones) | #4F4617 | 0.067 |
| Tritanopia (no blue cones) | #712A2E | 0.047 |
| Achromatopsia (no color) | #424242 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673418
#673418
oklch(38.6% 0.083 47.4)
- #004B63
#004B63
oklch(38.5% 0.075 227.8)
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 #673418, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.034
- Purple Brown #673A3F ΔE 0.051
- Mud Brown #60460F ΔE 0.054
- Reddy Brown #6E1005 ΔE 0.066
- Rust Brown #8B3103 ΔE 0.073
- Red Brown #8B2E16 ΔE 0.073
- Blood #770001 ΔE 0.078
- Maroon #800000 ΔE 0.080
Use #673418 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.