#673440
Closest named color: Purple Brown (#673A3F). oklch(39.5% 0.074 6), rgb(103, 52, 64).
Aa
White text reads best on this color (9.80:1).
About this color
#673440 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.074 and its hue 6°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.017 away. White text reads best on it, at 9.80:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.074) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.14:1 |
| White text | 9.80:1 |
Values
| HEX | #673440 |
| RGB | rgb(103, 52, 64) |
| HSL | hsl(346, 33%, 30%) |
| OKLCH | oklch(39.5% 0.074 6) |
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 #673440 | 9.80:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #673440 | 2.14:1 | Fails | Lc 11.5 | Not readable |
| #673440 text on white | 9.80:1 | AAA | Lc 92.5 | Preferred for body text |
| #673440 text on black | 2.14:1 | Fails | Lc -10.0 | 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
#FAF3F5
oklch(97% 0.008 357.8)
-
Step 100
100
#F4E6E8
oklch(93.7% 0.015 7.5)
-
Step 200
200
#ECD1D6
oklch(88.4% 0.031 5.1)
-
Step 300
300
#E1B2BB
oklch(80.8% 0.056 5.6)
-
Step 400
400
#D08998
oklch(70.6% 0.089 5.8)
-
Step 500
500
#C26A7F
oklch(63% 0.114 5.6)
-
Step 600
600
#AD5168
oklch(55.6% 0.122 6.2)
-
Step 700
700
#954157
oklch(49.2% 0.115 5.9)
-
Step 800
800
#793647
oklch(42.7% 0.095 6)
-
Step 900
900 (this color)
#673440
oklch(39.5% 0.074 6)
-
Step 950
950
#391C23
oklch(26.9% 0.046 5.2)
#673440 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) | #3D3E40 | 0.081 |
| Deuteranopia (no green cones) | #4A473F | 0.074 |
| Tritanopia (no blue cones) | #6F2F38 | 0.020 |
| Achromatopsia (no color) | #444444 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673440
#673440
oklch(39.5% 0.074 6)
- #00524C
#00524C
oklch(39.5% 0.069 186.3)
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 #673440, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.017
- Brownish Purple #76424E ΔE 0.051
- Chestnut #742802 ΔE 0.071
- Wine Red #7B0323 ΔE 0.078
- Bordeaux #7B002C ΔE 0.079
- Merlot #730039 ΔE 0.080
- Wine #80013F ΔE 0.083
- Reddy Brown #6E1005 ΔE 0.083
Use #673440 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.