#181F48#181F48

#181F48 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.9% C 0.076 H 272.6°. Best body text is #FFFFFF at 15.81:1 contrast (WCAG AA passes).

Color values

HEX	#181F48
RGB	rgb(24, 31, 72)
HSL	hsl(231, 50%, 19%)
HSV	hsv(231, 67%, 28%)
CMYK	cmyk(66.7%, 56.9%, 0%, 71.8%)
CIE-LAB	lab(13.48, 11.78, -26.68)
CIE-LCH	lch(13.48, 29.17, 293.82°)
OKLab	oklab(25.86% 0.0035 -0.0764)
OKLCH	oklch(25.86% 0.076 272.6)
XYZ	xyz(2.0360, 1.6419, 6.3393)
Luminance	0.0164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F48 #484118

analogous

#183748 #181F48 #291848

triadic

#181F48 #48181F #1F4818

tetradic

#181F48 #481837 #484118 #184829

square

#181F48 #481837 #484118 #184829

split-complementary

#181F48 #482918 #374818

monochromatic

#080A17 #090B1A #181F48 #273376 #3747A4

Accessibility & contrast

On white

15.81

#181F48 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#181F48 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F48

15.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F48	#FFFFFF	#000000	##FFFFFF
##181F48	1.00	15.81	1.33	15.81
#FFFFFF	15.81	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#082549

Deuteranopia (green-blind)

#012147

Tritanopia (blue-blind)

#002830

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181f48;
/* rgb */ color: rgb(24, 31, 72);
/* oklch */ color: oklch(25.9% 0.076 272.6);

Tailwind

colors: {
  custom: {
    50: '#5a5a7b',
    500: '#181f48',
    950: '#000000',
  },
}

SCSS

$custom: #181f48;
$custom-light: #5a5a7b;
$custom-dark: #000000;

JSON

{
  "hex": "#181f48",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 72
  },
  "hsl": {
    "h": 231.25,
    "s": 50,
    "l": 18.824
  },
  "oklch": {
    "l": 0.25864,
    "c": 0.07647,
    "h": 272.6
  },
  "luminance": 0.01642
}

Semantic roles & 50–950 ramp

primary

#181F48

secondary

#7F753D

accent

#C54EDA

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #181F48

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

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