#B0301F#B0301F

#B0301F is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.5% C 0.167 H 30.9°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#B0301F
RGB	rgb(176, 48, 31)
HSL	hsl(7, 70%, 41%)
HSV	hsv(7, 82%, 69%)
CMYK	cmyk(0%, 72.7%, 82.4%, 31%)
CIE-LAB	lab(40.32, 50.67, 40.31)
CIE-LCH	lch(40.32, 64.75, 38.50°)
OKLab	oklab(50.5% 0.1436 0.086)
OKLCH	oklch(50.5% 0.167 30.9)
XYZ	xyz(19.2111, 11.4459, 2.4938)
Luminance	0.1144 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B0301F #1F9FB0

analogous

#B01F57 #B0301F #B0781F

triadic

#B0301F #1FB030 #301FB0

tetradic

#B0301F #57B01F #1F9FB0 #781FB0

square

#B0301F #57B01F #1F9FB0 #781FB0

split-complementary

#B0301F #1FB078 #1F57B0

monochromatic

#48140D #7C2216 #B0301F #DB4531 #E47465

Accessibility & contrast

On white

6.39

#B0301F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#B0301F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B0301F

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B0301F	#FFFFFF	#000000	##FFFFFF
##B0301F	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574D1C

Deuteranopia (green-blind)

#766918

Tritanopia (blue-blind)

#C2002D

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #b0301f;
/* rgb */ color: rgb(176, 48, 31);
/* oklch */ color: oklch(50.5% 0.167 30.9);

Tailwind

colors: {
  custom: {
    50: '#d1715d',
    500: '#b0301f',
    950: '#000000',
  },
}

SCSS

$custom: #b0301f;
$custom-light: #d1715d;
$custom-dark: #000000;

JSON

{
  "hex": "#b0301f",
  "rgb": {
    "r": 176,
    "g": 48,
    "b": 31
  },
  "hsl": {
    "h": 7.034,
    "s": 70.048,
    "l": 40.588
  },
  "oklch": {
    "l": 0.50495,
    "c": 0.16736,
    "h": 30.9
  },
  "luminance": 0.11443
}

Semantic roles & 50–950 ramp

primary

#B0301F

secondary

#62BDC9

accent

#D8ED3B

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B0301F

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

Preview Lab → · Contrast checker → · Palette generator →