#1B347A#1B347A

#1B347A is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.1% C 0.123 H 265.5°. Best body text is #FFFFFF at 11.55:1 contrast (WCAG AA passes).

Color values

HEX	#1B347A
RGB	rgb(27, 52, 122)
HSL	hsl(224, 64%, 29%)
HSV	hsv(224, 78%, 48%)
CMYK	cmyk(77.9%, 57.4%, 0%, 52.2%)
CIE-LAB	lab(23.98, 17.39, -42.69)
CIE-LCH	lch(23.98, 46.09, 292.16°)
OKLab	oklab(35.1% -0.0097 -0.123)
OKLCH	oklch(35.1% 0.123 265.5)
XYZ	xyz(5.1916, 4.0936, 18.9251)
Luminance	0.0409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B347A #7A611B

analogous

#1B647A #1B347A #321B7A

triadic

#1B347A #7A1B34 #347A1B

tetradic

#1B347A #7A1B64 #7A611B #1B7A32

square

#1B347A #7A1B64 #7A611B #1B7A32

split-complementary

#1B347A #7A321B #647A1B

monochromatic

#060B19 #101F48 #1B347A #2649AC #3C64D4

Accessibility & contrast

On white

11.55

#1B347A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1B347A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B347A

11.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B347A	#FFFFFF	#000000	##FFFFFF
##1B347A	1.00	11.55	1.82	11.55
#FFFFFF	11.55	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7C

Deuteranopia (green-blind)

#003579

Tritanopia (blue-blind)

#004551

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b347a;
/* rgb */ color: rgb(27, 52, 122);
/* oklch */ color: oklch(35.1% 0.123 265.5);

Tailwind

colors: {
  custom: {
    50: '#676ba1',
    500: '#1b347a',
    950: '#000000',
  },
}

SCSS

$custom: #1b347a;
$custom-light: #676ba1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b347a",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 122
  },
  "hsl": {
    "h": 224.211,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.35097,
    "c": 0.12343,
    "h": 265.5
  },
  "luminance": 0.04094
}

Semantic roles & 50–950 ramp

primary

#1B347A

secondary

#AE9243

accent

#BB41E7

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B347A

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

Preview Lab → · Contrast checker → · Palette generator →