#18337A#18337A

#18337A is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.7% C 0.126 H 264.8°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#18337A
RGB	rgb(24, 51, 122)
HSL	hsl(223, 67%, 29%)
HSV	hsv(223, 80%, 48%)
CMYK	cmyk(80.3%, 58.2%, 0%, 52.2%)
CIE-LAB	lab(23.56, 17.73, -43.37)
CIE-LCH	lch(23.56, 46.85, 292.23°)
OKLab	oklab(34.75% -0.0114 -0.1251)
OKLCH	oklch(34.75% 0.126 264.8)
XYZ	xyz(5.0721, 3.9664, 18.9069)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18337A #7A5F18

analogous

#18647A #18337A #2E187A

triadic

#18337A #7A1833 #337A18

tetradic

#18337A #7A1864 #7A5F18 #187A2E

square

#18337A #7A1864 #7A5F18 #187A2E

split-complementary

#18337A #7A2E18 #647A18

monochromatic

#050B1A #0E1E47 #18337A #2248AD #3562D7

Accessibility & contrast

On white

11.71

#18337A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#18337A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18337A

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18337A	#FFFFFF	#000000	##FFFFFF
##18337A	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7C

Deuteranopia (green-blind)

#003479

Tritanopia (blue-blind)

#004551

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #18337a;
/* rgb */ color: rgb(24, 51, 122);
/* oklch */ color: oklch(34.7% 0.126 264.8);

Tailwind

colors: {
  custom: {
    50: '#666aa1',
    500: '#18337a',
    950: '#000000',
  },
}

SCSS

$custom: #18337a;
$custom-light: #666aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#18337a",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 122
  },
  "hsl": {
    "h": 223.469,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.34747,
    "c": 0.12566,
    "h": 264.8
  },
  "luminance": 0.03967
}

Semantic roles & 50–950 ramp

primary

#18337A

secondary

#AF903F

accent

#BB3EEA

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18337A

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

Preview Lab → · Contrast checker → · Palette generator →