#181E52#181E52

#181E52 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.094 H 273.2°. Best body text is #FFFFFF at 15.60:1 contrast (WCAG AA passes).

Color values

HEX	#181E52
RGB	rgb(24, 30, 82)
HSL	hsl(234, 55%, 21%)
HSV	hsv(234, 71%, 32%)
CMYK	cmyk(70.7%, 63.4%, 0%, 67.8%)
CIE-LAB	lab(14.01, 16.58, -32.68)
CIE-LCH	lch(14.01, 36.65, 296.90°)
OKLab	oklab(26.52% 0.0052 -0.094)
OKLCH	oklch(26.52% 0.094 273.2)
XYZ	xyz(2.3634, 1.7317, 8.1907)
Luminance	0.0173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.21

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E52 #524C18

analogous

#183B52 #181E52 #2F1852

triadic

#181E52 #52181E #1E5218

tetradic

#181E52 #52183B #524C18 #18522F

square

#181E52 #52183B #524C18 #18522F

split-complementary

#181E52 #522F18 #3B5218

monochromatic

#070918 #0A0D23 #181E52 #262F81 #3441B1

Accessibility & contrast

On white

15.60

#181E52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#181E52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E52

15.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E52	#FFFFFF	#000000	##FFFFFF
##181E52	1.00	15.60	1.35	15.60
#FFFFFF	15.60	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002654

Deuteranopia (green-blind)

#002151

Tritanopia (blue-blind)

#002B34

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #181e52;
/* rgb */ color: rgb(24, 30, 82);
/* oklch */ color: oklch(26.5% 0.094 273.2);

Tailwind

colors: {
  custom: {
    50: '#5d5983',
    500: '#181e52',
    950: '#000000',
  },
}

SCSS

$custom: #181e52;
$custom-light: #5d5983;
$custom-dark: #000000;

JSON

{
  "hex": "#181e52",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 82
  },
  "hsl": {
    "h": 233.793,
    "s": 54.717,
    "l": 20.784
  },
  "oklch": {
    "l": 0.26524,
    "c": 0.09419,
    "h": 273.2
  },
  "luminance": 0.01732
}

Semantic roles & 50–950 ramp

primary

#181E52

secondary

#89813D

accent

#CF4ADE

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181E52

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

Preview Lab → · Contrast checker → · Palette generator →