#181E53#181E53

#181E53 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.096 H 273.1°. Best body text is #FFFFFF at 15.56:1 contrast (WCAG AA passes).

Color values

HEX	#181E53
RGB	rgb(24, 30, 83)
HSL	hsl(234, 55%, 21%)
HSV	hsv(234, 71%, 33%)
CMYK	cmyk(71.1%, 63.9%, 0%, 67.5%)
CIE-LAB	lab(14.10, 16.98, -33.22)
CIE-LCH	lch(14.10, 37.31, 297.08°)
OKLab	oklab(26.62% 0.0052 -0.0956)
OKLCH	oklch(26.62% 0.096 273.1)
XYZ	xyz(2.4018, 1.7471, 8.3926)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E53 #534D18

analogous

#183B53 #181E53 #2F1853

triadic

#181E53 #53181E #1E5318

tetradic

#181E53 #53183B #534D18 #18532F

square

#181E53 #53183B #534D18 #18532F

split-complementary

#181E53 #532F18 #3B5318

monochromatic

#070918 #0A0D24 #181E53 #262F82 #3340B2

Accessibility & contrast

On white

15.56

#181E53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#181E53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E53

15.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E53	#FFFFFF	#000000	##FFFFFF
##181E53	1.00	15.56	1.35	15.56
#FFFFFF	15.56	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002755

Deuteranopia (green-blind)

#002152

Tritanopia (blue-blind)

#002B35

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #181e53;
/* rgb */ color: rgb(24, 30, 83);
/* oklch */ color: oklch(26.6% 0.096 273.1);

Tailwind

colors: {
  custom: {
    50: '#5d5984',
    500: '#181e53',
    950: '#000000',
  },
}

SCSS

$custom: #181e53;
$custom-light: #5d5984;
$custom-dark: #000000;

JSON

{
  "hex": "#181e53",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 83
  },
  "hsl": {
    "h": 233.898,
    "s": 55.14,
    "l": 20.98
  },
  "oklch": {
    "l": 0.26617,
    "c": 0.09577,
    "h": 273.1
  },
  "luminance": 0.01747
}

Semantic roles & 50–950 ramp

primary

#181E53

secondary

#8A823D

accent

#CF49DE

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181E53

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

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