#181A5E#181A5E

#181A5E is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.9% C 0.118 H 273.9°. Best body text is #FFFFFF at 15.58:1 contrast (WCAG AA passes).

Color values

HEX	#181A5E
RGB	rgb(24, 26, 94)
HSL	hsl(238, 59%, 23%)
HSV	hsv(238, 74%, 37%)
CMYK	cmyk(74.5%, 72.3%, 0%, 63.1%)
CIE-LAB	lab(14.06, 24.20, -40.68)
CIE-LCH	lch(14.06, 47.34, 300.75°)
OKLab	oklab(26.92% 0.008 -0.1175)
OKLCH	oklch(26.92% 0.118 273.9)
XYZ	xyz(2.7658, 1.7409, 10.7778)
Luminance	0.0174 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A5E #5E5C18

analogous

#183D5E #181A5E #39185E

triadic

#181A5E #5E181A #1A5E18

tetradic

#181A5E #5E183D #5E5C18 #185E39

square

#181A5E #5E183D #5E5C18 #185E39

split-complementary

#181A5E #5E3918 #3D5E18

monochromatic

#060718 #0C0D2D #181A5E #24278F #3135C0

Accessibility & contrast

On white

15.58

#181A5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#181A5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A5E

15.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A5E	#FFFFFF	#000000	##FFFFFF
##181A5E	1.00	15.58	1.35	15.58
#FFFFFF	15.58	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002760

Deuteranopia (green-blind)

#00205D

Tritanopia (blue-blind)

#002C39

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #181a5e;
/* rgb */ color: rgb(24, 26, 94);
/* oklch */ color: oklch(26.9% 0.118 273.9);

Tailwind

colors: {
  custom: {
    50: '#60578c',
    500: '#181a5e',
    950: '#000000',
  },
}

SCSS

$custom: #181a5e;
$custom-light: #60578c;
$custom-dark: #000000;

JSON

{
  "hex": "#181a5e",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 94
  },
  "hsl": {
    "h": 238.286,
    "s": 59.322,
    "l": 23.137
  },
  "oklch": {
    "l": 0.26918,
    "c": 0.11782,
    "h": 273.9
  },
  "luminance": 0.01741
}

Semantic roles & 50–950 ramp

primary

#181A5E

secondary

#94923D

accent

#DE45E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #181A5E

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

Preview Lab → · Contrast checker → · Palette generator →