#18257A#18257A

#18257A is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.9% C 0.144 H 269.2°. Best body text is #FFFFFF at 13.25:1 contrast (WCAG AA passes).

Color values

HEX	#18257A
RGB	rgb(24, 37, 122)
HSL	hsl(232, 67%, 29%)
HSV	hsv(232, 80%, 48%)
CMYK	cmyk(80.3%, 69.7%, 0%, 52.2%)
CIE-LAB	lab(19.73, 27.54, -49.63)
CIE-LCH	lch(19.73, 56.77, 299.03°)
OKLab	oklab(31.91% -0.002 -0.1437)
OKLCH	oklch(31.91% 0.144 269.2)
XYZ	xyz(4.5499, 2.9220, 18.7328)
Luminance	0.0292 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18257A #7A6D18

analogous

#18567A #18257A #3C187A

triadic

#18257A #7A1825 #257A18

tetradic

#18257A #7A1856 #7A6D18 #187A3C

square

#18257A #7A1856 #7A6D18 #187A3C

split-complementary

#18257A #7A3C18 #567A18

monochromatic

#05081A #0E1547 #18257A #2235AD #354BD7

Accessibility & contrast

On white

13.25

#18257A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#18257A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18257A

13.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18257A	#FFFFFF	#000000	##FFFFFF
##18257A	1.00	13.25	1.58	13.25
#FFFFFF	13.25	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347D

Deuteranopia (green-blind)

#002B78

Tritanopia (blue-blind)

#003C4C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #18257a;
/* rgb */ color: rgb(24, 37, 122);
/* oklch */ color: oklch(31.9% 0.144 269.2);

Tailwind

colors: {
  custom: {
    50: '#675fa1',
    500: '#18257a',
    950: '#000000',
  },
}

SCSS

$custom: #18257a;
$custom-light: #675fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#18257a",
  "rgb": {
    "r": 24,
    "g": 37,
    "b": 122
  },
  "hsl": {
    "h": 232.041,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.31905,
    "c": 0.14368,
    "h": 269.2
  },
  "luminance": 0.02922
}

Semantic roles & 50–950 ramp

primary

#18257A

secondary

#AFA03F

accent

#D33EEA

background

#F6F5FA

surface

#EBE9F3

border

#C6C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #18257A

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

Preview Lab → · Contrast checker → · Palette generator →