#181E50#181E50

#181E50 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.3% C 0.091 H 273.3°. Best body text is #FFFFFF at 15.67:1 contrast (WCAG AA passes).

Color values

HEX	#181E50
RGB	rgb(24, 30, 80)
HSL	hsl(234, 54%, 20%)
HSV	hsv(234, 70%, 31%)
CMYK	cmyk(70%, 62.5%, 0%, 68.6%)
CIE-LAB	lab(13.84, 15.77, -31.61)
CIE-LCH	lch(13.84, 35.32, 296.52°)
OKLab	oklab(26.34% 0.0052 -0.0909)
OKLCH	oklch(26.34% 0.091 273.3)
XYZ	xyz(2.2884, 1.7017, 7.7957)
Luminance	0.0170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E50 #504A18

analogous

#183A50 #181E50 #2E1850

triadic

#181E50 #50181E #1E5018

tetradic

#181E50 #50183A #504A18 #18502E

square

#181E50 #50183A #504A18 #18502E

split-complementary

#181E50 #502E18 #3A5018

monochromatic

#070918 #0A0C21 #181E50 #26307F #3441AE

Accessibility & contrast

On white

15.67

#181E50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#181E50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E50

15.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E50	#FFFFFF	#000000	##FFFFFF
##181E50	1.00	15.67	1.34	15.67
#FFFFFF	15.67	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002652

Deuteranopia (green-blind)

#00214F

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181e50;
/* rgb */ color: rgb(24, 30, 80);
/* oklch */ color: oklch(26.3% 0.091 273.3);

Tailwind

colors: {
  custom: {
    50: '#5c5981',
    500: '#181e50',
    950: '#000000',
  },
}

SCSS

$custom: #181e50;
$custom-light: #5c5981;
$custom-dark: #000000;

JSON

{
  "hex": "#181e50",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 80
  },
  "hsl": {
    "h": 233.571,
    "s": 53.846,
    "l": 20.392
  },
  "oklch": {
    "l": 0.26339,
    "c": 0.09103,
    "h": 273.3
  },
  "luminance": 0.01702
}

Semantic roles & 50–950 ramp

primary

#181E50

secondary

#877F3D

accent

#CE4BDD

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181E50

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

Preview Lab → · Contrast checker → · Palette generator →