#1B367A#1B367A

#1B367A is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.5% C 0.121 H 264.6°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#1B367A
RGB	rgb(27, 54, 122)
HSL	hsl(223, 64%, 29%)
HSV	hsv(223, 78%, 48%)
CMYK	cmyk(77.9%, 55.7%, 0%, 52.2%)
CIE-LAB	lab(24.56, 15.97, -41.74)
CIE-LCH	lch(24.56, 44.69, 290.94°)
OKLab	oklab(35.54% -0.0113 -0.1202)
OKLCH	oklch(35.54% 0.121 264.6)
XYZ	xyz(5.2828, 4.2759, 18.9555)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B367A #7A5F1B

analogous

#1B667A #1B367A #301B7A

triadic

#1B367A #7A1B36 #367A1B

tetradic

#1B367A #7A1B66 #7A5F1B #1B7A30

square

#1B367A #7A1B66 #7A5F1B #1B7A30

split-complementary

#1B367A #7A301B #667A1B

monochromatic

#060B19 #102048 #1B367A #264CAC #3C67D4

Accessibility & contrast

On white

11.32

#1B367A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1B367A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B367A

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B367A	#FFFFFF	#000000	##FFFFFF
##1B367A	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#023F7C

Deuteranopia (green-blind)

#003679

Tritanopia (blue-blind)

#004752

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b367a;
/* rgb */ color: rgb(27, 54, 122);
/* oklch */ color: oklch(35.5% 0.121 264.6);

Tailwind

colors: {
  custom: {
    50: '#676ca1',
    500: '#1b367a',
    950: '#000000',
  },
}

SCSS

$custom: #1b367a;
$custom-light: #676ca1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b367a",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 122
  },
  "hsl": {
    "h": 222.947,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.35539,
    "c": 0.12076,
    "h": 264.6
  },
  "luminance": 0.04276
}

Semantic roles & 50–950 ramp

primary

#1B367A

secondary

#AE9043

accent

#B841E7

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B367A

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

Preview Lab → · Contrast checker → · Palette generator →