#181C50#181C50

#181C50 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.9% C 0.094 H 274.4°. Best body text is #FFFFFF at 15.90:1 contrast (WCAG AA passes).

Color values

HEX	#181C50
RGB	rgb(24, 28, 80)
HSL	hsl(236, 54%, 20%)
HSV	hsv(236, 70%, 31%)
CMYK	cmyk(70%, 65%, 0%, 68.6%)
CIE-LAB	lab(13.25, 17.25, -32.55)
CIE-LCH	lch(13.25, 36.84, 297.92°)
OKLab	oklab(25.91% 0.0073 -0.0937)
OKLCH	oklch(25.91% 0.094 274.4)
XYZ	xyz(2.2394, 1.6037, 7.7794)
Luminance	0.0160 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C50 #504C18

analogous

#183850 #181C50 #301850

triadic

#181C50 #50181C #1C5018

tetradic

#181C50 #501838 #504C18 #185030

square

#181C50 #501838 #504C18 #185030

split-complementary

#181C50 #503018 #385018

monochromatic

#070818 #0A0C21 #181C50 #262C7F #343DAE

Accessibility & contrast

On white

15.90

#181C50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#181C50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C50

15.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C50	#FFFFFF	#000000	##FFFFFF
##181C50	1.00	15.90	1.32	15.90
#FFFFFF	15.90	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002552

Deuteranopia (green-blind)

#00204F

Tritanopia (blue-blind)

#002932

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #181c50;
/* rgb */ color: rgb(24, 28, 80);
/* oklch */ color: oklch(25.9% 0.094 274.4);

Tailwind

colors: {
  custom: {
    50: '#5d5882',
    500: '#181c50',
    950: '#000000',
  },
}

SCSS

$custom: #181c50;
$custom-light: #5d5882;
$custom-dark: #000000;

JSON

{
  "hex": "#181c50",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 80
  },
  "hsl": {
    "h": 235.714,
    "s": 53.846,
    "l": 20.392
  },
  "oklch": {
    "l": 0.25905,
    "c": 0.09397,
    "h": 274.4
  },
  "luminance": 0.01604
}

Semantic roles & 50–950 ramp

primary

#181C50

secondary

#87823D

accent

#D34BDD

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #181C50

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

Preview Lab → · Contrast checker → · Palette generator →