#181A4F#181A4F

#181A4F is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.4% C 0.095 H 275.6°. Best body text is #FFFFFF at 16.16:1 contrast (WCAG AA passes).

Color values

HEX	#181A4F
RGB	rgb(24, 26, 79)
HSL	hsl(238, 53%, 20%)
HSV	hsv(238, 70%, 31%)
CMYK	cmyk(69.6%, 67.1%, 0%, 69%)
CIE-LAB	lab(12.59, 18.32, -32.95)
CIE-LCH	lch(12.59, 37.70, 299.08°)
OKLab	oklab(25.39% 0.0093 -0.0949)
OKLCH	oklch(25.39% 0.095 275.6)
XYZ	xyz(2.1569, 1.4973, 7.5710)
Luminance	0.0150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.27

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A4F #4F4D18

analogous

#18354F #181A4F #31184F

triadic

#181A4F #4F181A #1A4F18

tetradic

#181A4F #4F1835 #4F4D18 #184F31

square

#181A4F #4F1835 #4F4D18 #184F31

split-complementary

#181A4F #4F3118 #354F18

monochromatic

#070817 #0A0B20 #181A4F #26297E #3539AD

Accessibility & contrast

On white

16.16

#181A4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#181A4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A4F

16.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A4F	#FFFFFF	#000000	##FFFFFF
##181A4F	1.00	16.16	1.30	16.16
#FFFFFF	16.16	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002351

Deuteranopia (green-blind)

#001E4E

Tritanopia (blue-blind)

#002731

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181a4f;
/* rgb */ color: rgb(24, 26, 79);
/* oklch */ color: oklch(25.4% 0.095 275.6);

Tailwind

colors: {
  custom: {
    50: '#5d5681',
    500: '#181a4f',
    950: '#000000',
  },
}

SCSS

$custom: #181a4f;
$custom-light: #5d5681;
$custom-dark: #000000;

JSON

{
  "hex": "#181a4f",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 79
  },
  "hsl": {
    "h": 237.818,
    "s": 53.398,
    "l": 20.196
  },
  "oklch": {
    "l": 0.25388,
    "c": 0.09533,
    "h": 275.6
  },
  "luminance": 0.01497
}

Semantic roles & 50–950 ramp

primary

#181A4F

secondary

#86833D

accent

#D74BDD

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181A4F

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

Preview Lab → · Contrast checker → · Palette generator →