#1B367C#1B367C

#1B367C is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.7% C 0.124 H 264.8°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#1B367C
RGB	rgb(27, 54, 124)
HSL	hsl(223, 64%, 30%)
HSV	hsv(223, 78%, 49%)
CMYK	cmyk(78.2%, 56.5%, 0%, 51.4%)
CIE-LAB	lab(24.72, 16.79, -42.75)
CIE-LCH	lch(24.72, 45.92, 291.44°)
OKLab	oklab(35.71% -0.0111 -0.1232)
OKLCH	oklch(35.71% 0.124 264.8)
XYZ	xyz(5.4080, 4.3260, 19.6149)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B367C #7C611B

analogous

#1B677C #1B367C #311B7C

triadic

#1B367C #7C1B36 #367C1B

tetradic

#1B367C #7C1B67 #7C611B #1B7C31

square

#1B367C #7C1B67 #7C611B #1B7C31

split-complementary

#1B367C #7C311B #677C1B

monochromatic

#050B19 #10204A #1B367C #264CAE #3D67D5

Accessibility & contrast

On white

11.26

#1B367C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1B367C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B367C

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B367C	#FFFFFF	#000000	##FFFFFF
##1B367C	1.00	11.26	1.87	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F7E

Deuteranopia (green-blind)

#00367B

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b367c;
/* rgb */ color: rgb(27, 54, 124);
/* oklch */ color: oklch(35.7% 0.124 264.8);

Tailwind

colors: {
  custom: {
    50: '#676ca2',
    500: '#1b367c',
    950: '#000000',
  },
}

SCSS

$custom: #1b367c;
$custom-light: #676ca2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b367c",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 124
  },
  "hsl": {
    "h": 223.299,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.35709,
    "c": 0.12369,
    "h": 264.8
  },
  "luminance": 0.04327
}

Semantic roles & 50–950 ramp

primary

#1B367C

secondary

#B09243

accent

#B941E7

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B367C

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

Preview Lab → · Contrast checker → · Palette generator →