#733437
Closest named color: Purple Brown (#673A3F). oklch(41% 0.089 18.9), rgb(115, 52, 55).
Aa
White text reads best on this color (9.22:1).
About this color
#733437 is a dark, moderately saturated red. In OKLCH its lightness is 41%, its chroma 0.089 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.027 away. White text reads best on it, at 9.22:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.089) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #733437 |
| RGB | rgb(115, 52, 55) |
| HSL | hsl(357, 38%, 33%) |
| OKLCH | oklch(41% 0.089 18.9) |
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 #733437 | 9.22:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #733437 | 2.27:1 | Fails | Lc 13.1 | Not readable |
| #733437 text on white | 9.22:1 | AAA | Lc 90.9 | Preferred for body text |
| #733437 text on black | 2.27:1 | 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
#FAF4F3
oklch(97.2% 0.007 28.8)
-
Step 100
100
#F4E6E6
oklch(93.6% 0.015 17.4)
-
Step 200
200
#ECD2D2
oklch(88.5% 0.029 17.7)
-
Step 300
300
#E0B4B3
oklch(80.9% 0.051 19.8)
-
Step 400
400
#CF8C8C
oklch(70.7% 0.082 19.3)
-
Step 500
500
#C16E70
oklch(63.1% 0.105 19)
-
Step 600
600
#AC5458
oklch(55.5% 0.115 18.7)
-
Step 700
700
#944448
oklch(49.1% 0.108 18.8)
-
Step 800
800 (this color)
#733437
oklch(41% 0.089 18.9)
-
Step 900
900
#613133
oklch(37.6% 0.069 18.3)
-
Step 950
950
#391D1E
oklch(26.9% 0.044 18.1)
#733437 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) | #423F37 | 0.095 |
| Deuteranopia (no green cones) | #524C36 | 0.087 |
| Tritanopia (no blue cones) | #7D2B35 | 0.025 |
| Achromatopsia (no color) | #474747 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #733437
#733437
oklch(41% 0.089 18.9)
- #005659
#005659
oklch(41.2% 0.07 198.9)
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 #733437, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.027
- Brownish Purple #76424E ΔE 0.043
- Chestnut #742802 ΔE 0.054
- Red Brown #8B2E16 ΔE 0.059
- Rust Brown #8B3103 ΔE 0.067
- Wine Red #7B0323 ΔE 0.069
- Bordeaux #7B002C ΔE 0.073
- Brown Red #922B05 ΔE 0.074
Use #733437 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.