#18257C#18257C

#18257C is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.1% C 0.146 H 269.1°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#18257C
RGB	rgb(24, 37, 124)
HSL	hsl(232, 68%, 29%)
HSV	hsv(232, 81%, 49%)
CMYK	cmyk(80.6%, 70.2%, 0%, 51.4%)
CIE-LAB	lab(19.93, 28.32, -50.58)
CIE-LCH	lch(19.93, 57.96, 299.25°)
OKLab	oklab(32.12% -0.0022 -0.1464)
OKLCH	oklch(32.12% 0.146 269.1)
XYZ	xyz(4.6751, 2.9720, 19.3921)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18257C #7C6F18

analogous

#18577C #18257C #3D187C

triadic

#18257C #7C1825 #257C18

tetradic

#18257C #7C1857 #7C6F18 #187C3D

square

#18257C #7C1857 #7C6F18 #187C3D

split-complementary

#18257C #7C3D18 #577C18

monochromatic

#05081A #0E1649 #18257C #2234AF #364BD8

Accessibility & contrast

On white

13.17

#18257C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#18257C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18257C

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18257C	#FFFFFF	#000000	##FFFFFF
##18257C	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00357F

Deuteranopia (green-blind)

#002B7A

Tritanopia (blue-blind)

#003D4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #18257c;
/* rgb */ color: rgb(24, 37, 124);
/* oklch */ color: oklch(32.1% 0.146 269.1);

Tailwind

colors: {
  custom: {
    50: '#685fa3',
    500: '#18257c',
    950: '#000000',
  },
}

SCSS

$custom: #18257c;
$custom-light: #685fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#18257c",
  "rgb": {
    "r": 24,
    "g": 37,
    "b": 124
  },
  "hsl": {
    "h": 232.2,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.32115,
    "c": 0.14644,
    "h": 269.1
  },
  "luminance": 0.02973
}

Semantic roles & 50–950 ramp

primary

#18257C

secondary

#B1A23F

accent

#D43DEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #18257C

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

Preview Lab → · Contrast checker → · Palette generator →