#181B7A#181B7A

#181B7A is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.2% C 0.155 H 271.1°. Best body text is #FFFFFF at 14.22:1 contrast (WCAG AA passes).

Color values

HEX	#181B7A
RGB	rgb(24, 27, 122)
HSL	hsl(238, 67%, 29%)
HSV	hsv(238, 80%, 48%)
CMYK	cmyk(80.3%, 77.9%, 0%, 52.2%)
CIE-LAB	lab(17.38, 34.01, -53.51)
CIE-LCH	lch(17.38, 63.40, 302.44°)
OKLab	oklab(30.22% 0.0029 -0.1549)
OKLCH	oklch(30.22% 0.155 271.1)
XYZ	xyz(4.2803, 2.3827, 18.6429)
Luminance	0.0238 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B7A #7A7718

analogous

#184C7A #181B7A #46187A

triadic

#181B7A #7A181B #1B7A18

tetradic

#181B7A #7A184C #7A7718 #187A46

square

#181B7A #7A184C #7A7718 #187A46

split-complementary

#181B7A #7A4618 #4C7A18

monochromatic

#05061A #0E1047 #181B7A #2226AD #353AD7

Accessibility & contrast

On white

14.22

#181B7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#181B7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B7A

14.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B7A	#FFFFFF	#000000	##FFFFFF
##181B7A	1.00	14.22	1.48	14.22
#FFFFFF	14.22	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7D

Deuteranopia (green-blind)

#002678

Tritanopia (blue-blind)

#003749

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #181b7a;
/* rgb */ color: rgb(24, 27, 122);
/* oklch */ color: oklch(30.2% 0.155 271.1);

Tailwind

colors: {
  custom: {
    50: '#6859a2',
    500: '#181b7a',
    950: '#000000',
  },
}

SCSS

$custom: #181b7a;
$custom-light: #6859a2;
$custom-dark: #000000;

JSON

{
  "hex": "#181b7a",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 122
  },
  "hsl": {
    "h": 238.163,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.30216,
    "c": 0.15496,
    "h": 271.1
  },
  "luminance": 0.02383
}

Semantic roles & 50–950 ramp

primary

#181B7A

secondary

#AFAB3F

accent

#E53EEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #181B7A

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

Preview Lab → · Contrast checker → · Palette generator →