#1B368C#1B368C

#1B368C is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.1% C 0.147 H 266.0°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B368C
RGB	rgb(27, 54, 140)
HSL	hsl(226, 68%, 33%)
HSV	hsv(226, 81%, 55%)
CMYK	cmyk(80.7%, 61.4%, 0%, 45.1%)
CIE-LAB	lab(26.05, 23.25, -50.59)
CIE-LCH	lch(26.05, 55.67, 294.68°)
OKLab	oklab(37.12% -0.0103 -0.1462)
OKLCH	oklch(37.12% 0.147 266)
XYZ	xyz(6.5031, 4.7640, 25.3827)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B368C #8C711B

analogous

#1B6E8C #1B368C #391B8C

triadic

#1B368C #8C1B36 #368C1B

tetradic

#1B368C #8C1B6E #8C711B #1B8C39

square

#1B368C #8C1B6E #8C711B #1B8C39

split-complementary

#1B368C #8C391B #6E8C1B

monochromatic

#070E25 #112259 #1B368C #254ABF #466ADB

Accessibility & contrast

On white

10.75

#1B368C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1B368C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B368C

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B368C	#FFFFFF	#000000	##FFFFFF
##1B368C	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438F

Deuteranopia (green-blind)

#00398A

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b368c;
/* rgb */ color: rgb(27, 54, 140);
/* oklch */ color: oklch(37.1% 0.147 266.0);

Tailwind

colors: {
  custom: {
    50: '#6b6cae',
    500: '#1b368c',
    950: '#000000',
  },
}

SCSS

$custom: #1b368c;
$custom-light: #6b6cae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b368c",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 140
  },
  "hsl": {
    "h": 225.664,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37124,
    "c": 0.14659,
    "h": 266
  },
  "luminance": 0.04765
}

Semantic roles & 50–950 ramp

primary

#1B368C

secondary

#BDA046

accent

#C13DEB

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1B368C

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

Preview Lab → · Contrast checker → · Palette generator →