#18237A#18237A

#18237A is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.5% C 0.146 H 269.6°. Best body text is #FFFFFF at 13.46:1 contrast (WCAG AA passes).

Color values

HEX	#18237A
RGB	rgb(24, 35, 122)
HSL	hsl(233, 67%, 29%)
HSV	hsv(233, 80%, 48%)
CMYK	cmyk(80.3%, 71.3%, 0%, 52.2%)
CIE-LAB	lab(19.23, 28.89, -50.46)
CIE-LCH	lch(19.23, 58.14, 299.80°)
OKLab	oklab(31.54% -0.0009 -0.1461)
OKLCH	oklch(31.54% 0.146 269.6)
XYZ	xyz(4.4894, 2.8009, 18.7126)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18237A #7A6F18

analogous

#18547A #18237A #3E187A

triadic

#18237A #7A1823 #237A18

tetradic

#18237A #7A1854 #7A6F18 #187A3E

square

#18237A #7A1854 #7A6F18 #187A3E

split-complementary

#18237A #7A3E18 #547A18

monochromatic

#05071A #0E1447 #18237A #2232AD #3547D7

Accessibility & contrast

On white

13.46

#18237A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#18237A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18237A

13.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18237A	#FFFFFF	#000000	##FFFFFF
##18237A	1.00	13.46	1.56	13.46
#FFFFFF	13.46	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337D

Deuteranopia (green-blind)

#002A78

Tritanopia (blue-blind)

#003B4B

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #18237a;
/* rgb */ color: rgb(24, 35, 122);
/* oklch */ color: oklch(31.5% 0.146 269.6);

Tailwind

colors: {
  custom: {
    50: '#675ea1',
    500: '#18237a',
    950: '#000000',
  },
}

SCSS

$custom: #18237a;
$custom-light: #675ea1;
$custom-dark: #000000;

JSON

{
  "hex": "#18237a",
  "rgb": {
    "r": 24,
    "g": 35,
    "b": 122
  },
  "hsl": {
    "h": 233.265,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.31542,
    "c": 0.14608,
    "h": 269.6
  },
  "luminance": 0.02801
}

Semantic roles & 50–950 ramp

primary

#18237A

secondary

#AFA23F

accent

#D73EEA

background

#F6F5FA

surface

#EBE9F3

border

#C6C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #18237A

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

Preview Lab → · Contrast checker → · Palette generator →