#1B367F#1B367F

#1B367F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.0% C 0.128 H 265.1°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#1B367F
RGB	rgb(27, 54, 127)
HSL	hsl(224, 65%, 30%)
HSV	hsv(224, 79%, 50%)
CMYK	cmyk(78.7%, 57.5%, 0%, 50.2%)
CIE-LAB	lab(24.96, 18.01, -44.25)
CIE-LCH	lch(24.96, 47.77, 292.15°)
OKLab	oklab(35.97% -0.0109 -0.1276)
OKLCH	oklch(35.97% 0.128 265.1)
XYZ	xyz(5.6006, 4.4030, 20.6293)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B367F #7F641B

analogous

#1B687F #1B367F #321B7F

triadic

#1B367F #7F1B36 #367F1B

tetradic

#1B367F #7F1B68 #7F641B #1B7F32

square

#1B367F #7F1B68 #7F641B #1B7F32

split-complementary

#1B367F #7F321B #687F1B

monochromatic

#060B1A #10214D #1B367F #264BB1 #3E67D6

Accessibility & contrast

On white

11.17

#1B367F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1B367F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B367F

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B367F	#FFFFFF	#000000	##FFFFFF
##1B367F	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004082

Deuteranopia (green-blind)

#00377E

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b367f;
/* rgb */ color: rgb(27, 54, 127);
/* oklch */ color: oklch(36.0% 0.128 265.1);

Tailwind

colors: {
  custom: {
    50: '#686ca5',
    500: '#1b367f',
    950: '#000000',
  },
}

SCSS

$custom: #1b367f;
$custom-light: #686ca5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b367f",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 127
  },
  "hsl": {
    "h": 223.8,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.35966,
    "c": 0.12807,
    "h": 265.1
  },
  "luminance": 0.04404
}

Semantic roles & 50–950 ramp

primary

#1B367F

secondary

#B39543

accent

#BB40E8

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1B367F

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

Preview Lab → · Contrast checker → · Palette generator →