#1B367D#1B367D

#1B367D is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.8% C 0.125 H 264.9°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B367D
RGB	rgb(27, 54, 125)
HSL	hsl(223, 64%, 30%)
HSV	hsv(223, 78%, 49%)
CMYK	cmyk(78.4%, 56.8%, 0%, 51%)
CIE-LAB	lab(24.80, 17.20, -43.25)
CIE-LCH	lch(24.80, 46.54, 291.68°)
OKLab	oklab(35.79% -0.0111 -0.1247)
OKLCH	oklch(35.79% 0.125 264.9)
XYZ	xyz(5.4715, 4.3514, 19.9496)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B367D #7D621B

analogous

#1B677D #1B367D #311B7D

triadic

#1B367D #7D1B36 #367D1B

tetradic

#1B367D #7D1B67 #7D621B #1B7D31

square

#1B367D #7D1B67 #7D621B #1B7D31

split-complementary

#1B367D #7D311B #677D1B

monochromatic

#050B19 #10204B #1B367D #264CAF #3D67D5

Accessibility & contrast

On white

11.23

#1B367D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1B367D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B367D

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B367D	#FFFFFF	#000000	##FFFFFF
##1B367D	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00407F

Deuteranopia (green-blind)

#00377C

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b367d;
/* rgb */ color: rgb(27, 54, 125);
/* oklch */ color: oklch(35.8% 0.125 264.9);

Tailwind

colors: {
  custom: {
    50: '#676ca3',
    500: '#1b367d',
    950: '#000000',
  },
}

SCSS

$custom: #1b367d;
$custom-light: #676ca3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b367d",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 125
  },
  "hsl": {
    "h": 223.469,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.35794,
    "c": 0.12516,
    "h": 264.9
  },
  "luminance": 0.04352
}

Semantic roles & 50–950 ramp

primary

#1B367D

secondary

#B19343

accent

#B940E7

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B367D

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

Preview Lab → · Contrast checker → · Palette generator →