#183574#183574

#183574 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.114 H 263.2°. Best body text is #FFFFFF at 11.67:1 contrast (WCAG AA passes).

Color values

HEX	#183574
RGB	rgb(24, 53, 116)
HSL	hsl(221, 66%, 27%)
HSV	hsv(221, 79%, 45%)
CMYK	cmyk(79.3%, 54.3%, 0%, 54.5%)
CIE-LAB	lab(23.67, 13.82, -39.37)
CIE-LCH	lch(23.67, 41.73, 289.34°)
OKLab	oklab(34.68% -0.0136 -0.1133)
OKLCH	oklch(34.68% 0.114 263.2)
XYZ	xyz(4.8011, 4.0008, 17.0388)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183574 #745718

analogous

#186374 #183574 #291874

triadic

#183574 #741835 #357418

tetradic

#183574 #741863 #745718 #187429

square

#183574 #741863 #745718 #187429

split-complementary

#183574 #742918 #637418

monochromatic

#050C19 #0E1E41 #183574 #224CA7 #3265D5

Accessibility & contrast

On white

11.67

#183574 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#183574 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183574

11.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183574	#FFFFFF	#000000	##FFFFFF
##183574	1.00	11.67	1.80	11.67
#FFFFFF	11.67	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A3D76

Deuteranopia (green-blind)

#003473

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183574;
/* rgb */ color: rgb(24, 53, 116);
/* oklch */ color: oklch(34.7% 0.114 263.2);

Tailwind

colors: {
  custom: {
    50: '#646b9c',
    500: '#183574',
    950: '#000000',
  },
}

SCSS

$custom: #183574;
$custom-light: #646b9c;
$custom-dark: #000000;

JSON

{
  "hex": "#183574",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 116
  },
  "hsl": {
    "h": 221.087,
    "s": 65.714,
    "l": 27.451
  },
  "oklch": {
    "l": 0.34682,
    "c": 0.11415,
    "h": 263.2
  },
  "luminance": 0.04001
}

Semantic roles & 50–950 ramp

primary

#183574

secondary

#A9883F

accent

#B33FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183574

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

Preview Lab → · Contrast checker → · Palette generator →