#1B367B#1B367B

#1B367B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.6% C 0.122 H 264.7°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#1B367B
RGB	rgb(27, 54, 123)
HSL	hsl(223, 64%, 29%)
HSV	hsv(223, 78%, 48%)
CMYK	cmyk(78%, 56.1%, 0%, 51.8%)
CIE-LAB	lab(24.64, 16.38, -42.24)
CIE-LCH	lch(24.64, 45.31, 291.19°)
OKLab	oklab(35.62% -0.0112 -0.1217)
OKLCH	oklch(35.62% 0.122 264.7)
XYZ	xyz(5.3450, 4.3008, 19.2835)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B367B #7B601B

analogous

#1B667B #1B367B #301B7B

triadic

#1B367B #7B1B36 #367B1B

tetradic

#1B367B #7B1B66 #7B601B #1B7B30

square

#1B367B #7B1B66 #7B601B #1B7B30

split-complementary

#1B367B #7B301B #667B1B

monochromatic

#060B19 #102049 #1B367B #264CAD #3C67D4

Accessibility & contrast

On white

11.29

#1B367B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1B367B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B367B

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B367B	#FFFFFF	#000000	##FFFFFF
##1B367B	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F7D

Deuteranopia (green-blind)

#00367A

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b367b;
/* rgb */ color: rgb(27, 54, 123);
/* oklch */ color: oklch(35.6% 0.122 264.7);

Tailwind

colors: {
  custom: {
    50: '#676ca2',
    500: '#1b367b',
    950: '#000000',
  },
}

SCSS

$custom: #1b367b;
$custom-light: #676ca2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b367b",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 123
  },
  "hsl": {
    "h": 223.125,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.35624,
    "c": 0.12223,
    "h": 264.7
  },
  "luminance": 0.04301
}

Semantic roles & 50–950 ramp

primary

#1B367B

secondary

#AF9143

accent

#B841E7

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B367B

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

Preview Lab → · Contrast checker → · Palette generator →