#181B65#181B65

#181B65 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.9% C 0.127 H 272.9°. Best body text is #FFFFFF at 15.18:1 contrast (WCAG AA passes).

Color values

HEX	#181B65
RGB	rgb(24, 27, 101)
HSL	hsl(238, 62%, 25%)
HSV	hsv(238, 76%, 40%)
CMYK	cmyk(76.2%, 73.3%, 0%, 60.4%)
CIE-LAB	lab(15.05, 26.22, -43.71)
CIE-LCH	lch(15.05, 50.97, 300.95°)
OKLab	oklab(27.85% 0.0064 -0.1264)
OKLCH	oklch(27.85% 0.127 272.9)
XYZ	xyz(3.1168, 1.9173, 12.5152)
Luminance	0.0192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B65 #656218

analogous

#184265 #181B65 #3C1865

triadic

#181B65 #65181B #1B6518

tetradic

#181B65 #651842 #656218 #18653C

square

#181B65 #651842 #656218 #18653C

split-complementary

#181B65 #653C18 #426518

monochromatic

#060719 #0C0E34 #181B65 #242896 #3035C8

Accessibility & contrast

On white

15.18

#181B65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#181B65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B65

15.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B65	#FFFFFF	#000000	##FFFFFF
##181B65	1.00	15.18	1.38	15.18
#FFFFFF	15.18	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002967

Deuteranopia (green-blind)

#002264

Tritanopia (blue-blind)

#002F3D

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #181b65;
/* rgb */ color: rgb(24, 27, 101);
/* oklch */ color: oklch(27.9% 0.127 272.9);

Tailwind

colors: {
  custom: {
    50: '#625892',
    500: '#181b65',
    950: '#000000',
  },
}

SCSS

$custom: #181b65;
$custom-light: #625892;
$custom-dark: #000000;

JSON

{
  "hex": "#181b65",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 101
  },
  "hsl": {
    "h": 237.662,
    "s": 61.6,
    "l": 24.51
  },
  "oklch": {
    "l": 0.27851,
    "c": 0.12656,
    "h": 272.9
  },
  "luminance": 0.01918
}

Semantic roles & 50–950 ramp

primary

#181B65

secondary

#9B983E

accent

#DE43E5

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #181B65

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

Preview Lab → · Contrast checker → · Palette generator →