HSL(1, 37%, 18%)

Red — Red color

Adjust Color

Color Information

Color Name

Red

Color Family

Red

Warm / Cool

🔴 Warm

Temperature

2000K

CSS Class

bg-[hsl(1,37%,18%)]

Color Conversions

Format Value CSS Usage
HSL hsl(1, 37%, 18%) color: hsl(1, 37%, 18%)
HEX #3F1D1D color: #3F1D1D
RGB rgb(63, 29, 29) color: rgb(63, 29, 29)
CMYK cmyk(0%, 54%, 54%, 75%)
HSV hsv(0, 54%, 25%)
HWB hwb(0 12% 75%) color: hwb(0 12% 75%)
OKLCH oklch(0.2789 0.0531 21.04) color: oklch(0.2789 0.0531 21.04)
Lab lab(15.62 16.5 7.54) color: lab(15.62 16.5 7.54)
LCH lch(15.62 18.14 24.56) color: lch(15.62 18.14 24.56)

Color Theory

Complementary

Triadic

Analogous

Tetradic (Square)

Split-Complementary

Accessibility (WCAG)

White text on color

Black text on color

Color on white bg

Colored text

Contrast Ratios

vs White 14.95:1
vs Black 1.4:1

AA Normal (4.5:1)

on White: PASS ✓ on Black: FAIL ✗

AA Large (3:1)

on White: PASS ✓ on Black: FAIL ✗

AAA Normal (7:1)

on White: PASS ✓

Best text on this color: white

Color Blindness Simulation

Protanopia (Red-blind)

#30301D — rgb(48, 48, 29)

Deuteranopia (Green-blind)

#32351D — rgb(50, 53, 29)

Tritanopia (Blue-blind)

#3D1D1D — rgb(61, 29, 29)

Tints & Shades

Tints (Lighter →)

← Shades (Darker)

Saturation (0% → 100%)

CSS Code Snippets

background

background-color: hsl(1, 37%, 18%);

text

color: hsl(1, 37%, 18%);

border

border: 2px solid hsl(1, 37%, 18%);

gradient light

background: linear-gradient(to right, hsl(1, 37%, 38%), hsl(1, 37%, 18%));

gradient dark

background: linear-gradient(to right, hsl(1, 37%, 18%), hsl(1, 37%, 0%))

hex

background-color: #3F1D1D;

tailwind

bg-[hsl(1,37%,18%)]

box shadow

box-shadow: 0 4px 6px -1px hsl(1, 37%, 18%, 0.4);

css variable

--color-primary: hsl(1, 37%, 18%);

Related Colors

Use Cases for Red

Alerts & errors Call-to-action buttons Brand logos Sale badges Warning messages

Frequently Asked Questions

What are all the color codes for HSL(1, 37%, 18%)?

HEX: #3F1D1D | RGB: rgb(63, 29, 29) | CMYK: 0%, 54%, 54%, 75% | HSV: 0°, 54%, 25%. Copy any format from the conversion table above.

What colors go well with #3F1D1D?

The complementary color is HSL(181, 37%, 18%). For a triadic harmony, use hues 1°, 121°, and 241°. For analogous combinations, try hues 331° and 31°. See the Color Harmony section above for complete palettes with previews.

How do I use HSL(1, 37%, 18%) in CSS?

As HSL: color: hsl(1, 37%, 18%); — As HEX: color: #3F1D1D; — As RGB: color: rgb(63, 29, 29); — Tailwind CSS: bg-[hsl(1,37%,18%)] — CSS variable: --color-primary: hsl(1, 37%, 18%);