#181A5D#181A5D

#181A5D is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.8% C 0.116 H 274.0°. Best body text is #FFFFFF at 15.62:1 contrast (WCAG AA passes).

Color values

HEX	#181A5D
RGB	rgb(24, 26, 93)
HSL	hsl(238, 59%, 23%)
HSV	hsv(238, 74%, 36%)
CMYK	cmyk(74.2%, 72%, 0%, 63.5%)
CIE-LAB	lab(13.96, 23.82, -40.18)
CIE-LCH	lch(13.96, 46.71, 300.66°)
OKLab	oklab(26.81% 0.0081 -0.1161)
OKLCH	oklch(26.81% 0.116 274)
XYZ	xyz(2.7212, 1.7230, 10.5430)
Luminance	0.0172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A5D #5D5B18

analogous

#183C5D #181A5D #38185D

triadic

#181A5D #5D181A #1A5D18

tetradic

#181A5D #5D183C #5D5B18 #185D38

square

#181A5D #5D183C #5D5B18 #185D38

split-complementary

#181A5D #5D3818 #3C5D18

monochromatic

#060718 #0B0C2C #181A5D #25288E #3135BE

Accessibility & contrast

On white

15.62

#181A5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#181A5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A5D

15.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A5D	#FFFFFF	#000000	##FFFFFF
##181A5D	1.00	15.62	1.34	15.62
#FFFFFF	15.62	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275F

Deuteranopia (green-blind)

#00205C

Tritanopia (blue-blind)

#002C39

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #181a5d;
/* rgb */ color: rgb(24, 26, 93);
/* oklch */ color: oklch(26.8% 0.116 274.0);

Tailwind

colors: {
  custom: {
    50: '#60568c',
    500: '#181a5d',
    950: '#000000',
  },
}

SCSS

$custom: #181a5d;
$custom-light: #60568c;
$custom-dark: #000000;

JSON

{
  "hex": "#181a5d",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 93
  },
  "hsl": {
    "h": 238.261,
    "s": 58.974,
    "l": 22.941
  },
  "oklch": {
    "l": 0.26812,
    "c": 0.11636,
    "h": 274
  },
  "luminance": 0.01723
}

Semantic roles & 50–950 ramp

primary

#181A5D

secondary

#93913D

accent

#DE46E2

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #181A5D

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

Preview Lab → · Contrast checker → · Palette generator →