#181C84#181C84

#181C84 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.5% C 0.167 H 270.2°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#181C84
RGB	rgb(24, 28, 132)
HSL	hsl(238, 69%, 31%)
HSV	hsv(238, 82%, 52%)
CMYK	cmyk(81.8%, 78.8%, 0%, 48.2%)
CIE-LAB	lab(18.76, 36.97, -57.58)
CIE-LCH	lch(18.76, 68.43, 302.70°)
OKLab	oklab(31.53% 0.0007 -0.1668)
OKLCH	oklch(31.53% 0.167 270.2)
XYZ	xyz(4.9554, 2.6901, 22.0834)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C84 #848018

analogous

#185284 #181C84 #4A1884

triadic

#181C84 #84181C #1C8418

tetradic

#181C84 #841852 #848018 #18844A

square

#181C84 #841852 #848018 #18844A

split-complementary

#181C84 #844A18 #528418

monochromatic

#05061C #0F1150 #181C84 #2127B8 #3B41DB

Accessibility & contrast

On white

13.65

#181C84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#181C84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C84

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C84	#FFFFFF	#000000	##FFFFFF
##181C84	1.00	13.65	1.54	13.65
#FFFFFF	13.65	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003387

Deuteranopia (green-blind)

#002882

Tritanopia (blue-blind)

#003B4F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #181c84;
/* rgb */ color: rgb(24, 28, 132);
/* oklch */ color: oklch(31.5% 0.167 270.2);

Tailwind

colors: {
  custom: {
    50: '#6b5aa9',
    500: '#181c84',
    950: '#000000',
  },
}

SCSS

$custom: #181c84;
$custom-light: #6b5aa9;
$custom-dark: #000000;

JSON

{
  "hex": "#181c84",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 132
  },
  "hsl": {
    "h": 237.778,
    "s": 69.231,
    "l": 30.588
  },
  "oklch": {
    "l": 0.31534,
    "c": 0.16677,
    "h": 270.2
  },
  "luminance": 0.02691
}

Semantic roles & 50–950 ramp

primary

#181C84

secondary

#B8B340

accent

#E63CEC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #181C84

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

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