#7C3137
Closest named color: Purple Brown (#673A3F). oklch(42% 0.104 17.9), rgb(124, 49, 55).
Aa
White text reads best on this color (8.93:1).
About this color
#7C3137 is a dark, moderately saturated red. In OKLCH its lightness is 42%, its chroma 0.104 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.044 away. White text reads best on it, at 8.93:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.104) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #7C3137 |
| RGB | rgb(124, 49, 55) |
| HSL | hsl(355, 43%, 34%) |
| OKLCH | oklch(42% 0.104 17.9) |
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 #7C3137 | 8.93:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #7C3137 | 2.35:1 | Fails | Lc 14.1 | Not readable |
| #7C3137 text on white | 8.93:1 | AAA | Lc 89.9 | Fine for body text |
| #7C3137 text on black | 2.35:1 | Fails | Lc -12.4 | 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 800.
-
Step 50
50
#FBF3F3
oklch(97% 0.009 17.3)
-
Step 100
100
#F6E5E5
oklch(93.5% 0.019 17.5)
-
Step 200
200
#EFD1D1
oklch(88.6% 0.034 17.8)
-
Step 300
300
#E6B1B2
oklch(80.9% 0.062 17.3)
-
Step 400
400
#D7878A
oklch(70.7% 0.098 17.4)
-
Step 500
500
#CA676D
oklch(63.1% 0.126 17.5)
-
Step 600
600
#B54C55
oklch(55.6% 0.137 17.5)
-
Step 700
700
#9B3D45
oklch(49.1% 0.126 17.9)
-
Step 800
800 (this color)
#7C3137
oklch(42% 0.104 17.9)
-
Step 900
900
#662D31
oklch(37.7% 0.082 17.5)
-
Step 950
950
#3C1B1D
oklch(27% 0.052 17.3)
#7C3137 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) | #424037 | 0.114 |
| Deuteranopia (no green cones) | #554F35 | 0.105 |
| Tritanopia (no blue cones) | #872534 | 0.028 |
| Achromatopsia (no color) | #4A4A4A | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #7C3137
#7C3137
oklch(42% 0.104 17.9)
- #00595B
#00595B
oklch(42.1% 0.072 197.4)
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 #7C3137, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.044
- Brownish Purple #76424E ΔE 0.044
- Red Brown #8B2E16 ΔE 0.047
- Chestnut #742802 ΔE 0.058
- Rust Brown #8B3103 ΔE 0.058
- Brown Red #922B05 ΔE 0.062
- Brick Red #8F1402 ΔE 0.062
- Red Wine #8C0034 ΔE 0.062
Use #7C3137 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.