#FF3604#FF3604

#FF3604 is a light, highly saturated red. Relative luminance 0.239; OKLCH L 64.8% C 0.239 H 32.8°. Best body text is #000000 at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#FF3604
RGB	rgb(255, 54, 4)
HSL	hsl(12, 100%, 51%)
HSV	hsv(12, 98%, 100%)
CMYK	cmyk(0%, 78.8%, 98.4%, 0%)
CIE-LAB	lab(56.00, 72.25, 67.38)
CIE-LCH	lch(56.00, 98.80, 43.00°)
OKLab	oklab(64.84% 0.2009 0.1294)
OKLCH	oklch(64.84% 0.239 32.8)
XYZ	xyz(42.5866, 23.9142, 2.4885)
Luminance	0.2391 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF3604 #04CDFF

analogous

#FF044F #FF3604 #FFB304

triadic

#FF3604 #04FF36 #3604FF

tetradic

#FF3604 #4FFF04 #04CDFF #B304FF

square

#FF3604 #4FFF04 #04CDFF #B304FF

split-complementary

#FF3604 #04FFB3 #044FFF

monochromatic

#891B00 #C62700 #FF3604 #FF6741 #FF987E

Accessibility & contrast

On white

3.63

#FF3604 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.78

#FF3604 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #FF3604

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF3604	#FFFFFF	#000000	##000000
##FF3604	1.00	3.63	5.78	5.78
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.78	21.00	1.00	1.00
##000000	5.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#796A00

Deuteranopia (green-blind)

#A99600

Tritanopia (blue-blind)

#FF0031

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #ff3604;
/* rgb */ color: rgb(255, 54, 4);
/* oklch */ color: oklch(64.8% 0.239 32.8);

Tailwind

colors: {
  custom: {
    50: '#ff7f56',
    500: '#ff3604',
    950: '#000000',
  },
}

SCSS

$custom: #ff3604;
$custom-light: #ff7f56;
$custom-dark: #000000;

JSON

{
  "hex": "#ff3604",
  "rgb": {
    "r": 255,
    "g": 54,
    "b": 4
  },
  "hsl": {
    "h": 11.952,
    "s": 100,
    "l": 50.784
  },
  "oklch": {
    "l": 0.64844,
    "c": 0.23897,
    "h": 32.8
  },
  "luminance": 0.23907
}

Semantic roles & 50–950 ramp

primary

#FF3604

secondary

#78D1E7

accent

#D4FF29

background

#FFF8F5

surface

#FFEFE9

border

#D7CAC5

text

#1C0B03

muted

#887C78

Preview Lab

Preview with #FF3604

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →