Stoplight

Also known as: Setsugekka, Red Knuckles, Hot Flamin Chilli, Snake Fruit

With its warm undertone, Stoplight (#DD1111) comes across as passionate and urgent. Designers reach for it in food branding and sale banners. Stoplight plays well with cyan tones — the harmonies below show exactly which ones. It's dark enough to use for text on white backgrounds (5.04:1, passes WCAG AA).

Stoplight color codes

HEX
#DD1111
RGB
rgb(221, 17, 17)
RGBA
rgba(221, 17, 17, 1)
HSL
hsl(0, 86%, 47%)
HSV
hsv(0, 92%, 87%)
CMYK
cmyk(0%, 92%, 92%, 13%)
LAB
lab(47.7 71.2 57.6)
OKLCH
oklch(56.8% 0.227 28.6)

Color intelligence

sRGB safeShifts in CMYK print

Displays accurately on every screen. Vivid colors like this typically lose some intensity in CMYK print — request a physical proof for brand-critical work.

Temperature

CoolWarm

warm

Nearest standard colors

  • CSS: red#FF0000 · ΔE 7.2
  • RAL 3028 — Pure red#E72512 · ΔE 3.4 · approximate

RAL values are widely published approximations of the physical standard. For Pantone-adjacent workflows, match by eye against a physical fan deck — Pantone's values are proprietary and device-dependent, so we don't print lookups.

Where Stoplight works

  • Web & UI: Use it directly for text on light surfaces; it clears AA contrast without adjustment.
  • Interiors: Use it where you want the eye to land — front door, built-ins, or one bold wall.
  • Fashion: One garment in this color carries an outfit; two starts to compete.
  • Branding: Commands attention in logos and packaging; balance it with generous neutral space.
  • Web & UI: Reads as an interactive accent: fills, hovers, focus rings. Keep body text in a darker neutral.
  • Branding: Best in a brand's supporting palette — packaging interiors, patterns, campaign accents.

Copy as — every ecosystem

Tints, shades, and tones of Stoplight

Tints (lighter)

Shades (darker)

Tones (muted)

Color harmonies

Palettes built from Stoplight by rotating its hue in OKLCH space. Click any swatch to copy its hex code.

Complementary

Analogous

Triadic

Split-complementary

Tetradic

Monochromatic

Contrast & accessibility

Aa — on white

contrast 5.04:1

AA passAAA failAA large pass

Aa — on black

contrast 4.16:1

AA failAAA failAA large pass

Best text color on a Stoplight background: #ffffff

Palettes featuring Stoplight

Stoplight with its complement

Soft neighbors of Stoplight

Stoplight triad

Similar colors

Looking for maximum contrast instead? The complement of Stoplight is closest to Cruising.

Stoplight FAQs

What color is Stoplight?

Stoplight is a medium red with the hex code #DD1111. In HSL terms it has a hue of 0°, 86% saturation, and 47% lightness.

What is the hex code for Stoplight?

The hex code for Stoplight is #DD1111. In RGB it's rgb(221, 17, 17), and in CMYK it's cmyk(0%, 92%, 92%, 13%).

What colors go well with Stoplight?

Stoplight pairs naturally with cyan tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.

Got a photo with a color like this? Identify it with the analyzer — free, instant, private.