#181E54#181E54

#181E54 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.7% C 0.097 H 273.1°. Best body text is #FFFFFF at 15.53:1 contrast (WCAG AA passes).

Color values

HEX	#181E54
RGB	rgb(24, 30, 84)
HSL	hsl(234, 56%, 21%)
HSV	hsv(234, 71%, 33%)
CMYK	cmyk(71.4%, 64.3%, 0%, 67.1%)
CIE-LAB	lab(14.19, 17.39, -33.75)
CIE-LCH	lch(14.19, 37.97, 297.26°)
OKLab	oklab(26.71% 0.0052 -0.0972)
OKLCH	oklch(26.71% 0.097 273.1)
XYZ	xyz(2.4407, 1.7626, 8.5974)
Luminance	0.0176 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E54 #544E18

analogous

#183C54 #181E54 #301854

triadic

#181E54 #54181E #1E5418

tetradic

#181E54 #54183C #544E18 #185430

square

#181E54 #54183C #544E18 #185430

split-complementary

#181E54 #543018 #3C5418

monochromatic

#070818 #0A0D24 #181E54 #262F84 #3340B3

Accessibility & contrast

On white

15.53

#181E54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#181E54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E54

15.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E54	#FFFFFF	#000000	##FFFFFF
##181E54	1.00	15.53	1.35	15.53
#FFFFFF	15.53	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002756

Deuteranopia (green-blind)

#002153

Tritanopia (blue-blind)

#002B35

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #181e54;
/* rgb */ color: rgb(24, 30, 84);
/* oklch */ color: oklch(26.7% 0.097 273.1);

Tailwind

colors: {
  custom: {
    50: '#5d5985',
    500: '#181e54',
    950: '#000000',
  },
}

SCSS

$custom: #181e54;
$custom-light: #5d5985;
$custom-dark: #000000;

JSON

{
  "hex": "#181e54",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 84
  },
  "hsl": {
    "h": 234,
    "s": 55.556,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26711,
    "c": 0.09734,
    "h": 273.1
  },
  "luminance": 0.01763
}

Semantic roles & 50–950 ramp

primary

#181E54

secondary

#8B833D

accent

#D049DF

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181E54

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

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