#1B2C85#1B2C85

#1B2C85 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.5% C 0.149 H 268.5°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C85
RGB	rgb(27, 44, 133)
HSL	hsl(230, 66%, 31%)
HSV	hsv(230, 80%, 52%)
CMYK	cmyk(79.7%, 66.9%, 0%, 47.8%)
CIE-LAB	lab(22.75, 27.37, -51.63)
CIE-LCH	lch(22.75, 58.43, 297.93°)
OKLab	oklab(34.48% -0.0039 -0.1494)
OKLCH	oklch(34.48% 0.149 268.5)
XYZ	xyz(5.5849, 3.7272, 22.6108)
Luminance	0.0373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C85 #85741B

analogous

#1B6185 #1B2C85 #3F1B85

triadic

#1B2C85 #851B2C #2C851B

tetradic

#1B2C85 #851B61 #85741B #1B853F

square

#1B2C85 #851B61 #85741B #1B853F

split-complementary

#1B2C85 #853F1B #61851B

monochromatic

#060A1F #111B52 #1B2C85 #253DB8 #425AD9

Accessibility & contrast

On white

12.03

#1B2C85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1B2C85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C85

12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C85	#FFFFFF	#000000	##FFFFFF
##1B2C85	1.00	12.03	1.75	12.03
#FFFFFF	12.03	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B88

Deuteranopia (green-blind)

#003183

Tritanopia (blue-blind)

#004454

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2c85;
/* rgb */ color: rgb(27, 44, 133);
/* oklch */ color: oklch(34.5% 0.149 268.5);

Tailwind

colors: {
  custom: {
    50: '#6a65a9',
    500: '#1b2c85',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c85;
$custom-light: #6a65a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c85",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 133
  },
  "hsl": {
    "h": 230.377,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.34483,
    "c": 0.14944,
    "h": 268.5
  },
  "luminance": 0.03728
}

Semantic roles & 50–950 ramp

primary

#1B2C85

secondary

#B8A644

accent

#CE3FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080510

muted

#7A7A7F

Preview Lab

Preview with #1B2C85

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

Preview Lab → · Contrast checker → · Palette generator →