#1B479B#1B479B

#1B479B is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.0% C 0.146 H 261.7°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#1B479B
RGB	rgb(27, 71, 155)
HSL	hsl(219, 70%, 36%)
HSV	hsv(219, 83%, 61%)
CMYK	cmyk(82.6%, 54.2%, 0%, 39.2%)
CIE-LAB	lab(32.04, 17.55, -50.03)
CIE-LCH	lch(32.04, 53.02, 289.33°)
OKLab	oklab(42.02% -0.0211 -0.1443)
OKLCH	oklch(42.02% 0.146 261.7)
XYZ	xyz(8.6195, 7.1050, 31.9211)
Luminance	0.0711 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B479B #9B6F1B

analogous

#1B879B #1B479B #2F1B9B

triadic

#1B479B #9B1B47 #479B1B

tetradic

#1B479B #9B1B87 #9B6F1B #1B9B2F

square

#1B479B #9B1B87 #9B6F1B #1B9B2F

split-complementary

#1B479B #9B2F1B #879B1B

monochromatic

#091733 #122F67 #1B479B #245FCF #5082E0

Accessibility & contrast

On white

8.67

#1B479B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1B479B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B479B

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B479B	#FFFFFF	#000000	##FFFFFF
##1B479B	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03519E

Deuteranopia (green-blind)

#004699

Tritanopia (blue-blind)

#005C6A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b479b;
/* rgb */ color: rgb(27, 71, 155);
/* oklch */ color: oklch(42.0% 0.146 261.7);

Tailwind

colors: {
  custom: {
    50: '#6e79b9',
    500: '#1b479b',
    950: '#000000',
  },
}

SCSS

$custom: #1b479b;
$custom-light: #6e79b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b479b",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 155
  },
  "hsl": {
    "h": 219.375,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.42019,
    "c": 0.14581,
    "h": 261.7
  },
  "luminance": 0.07106
}

Semantic roles & 50–950 ramp

primary

#1B479B

secondary

#C39B4F

accent

#B03BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B479B

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

Preview Lab → · Contrast checker → · Palette generator →