#18318F#18318F

#18318F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.3% C 0.158 H 266.5°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#18318F
RGB	rgb(24, 49, 143)
HSL	hsl(227, 71%, 33%)
HSV	hsv(227, 83%, 56%)
CMYK	cmyk(83.2%, 65.7%, 0%, 43.9%)
CIE-LAB	lab(24.87, 27.59, -54.39)
CIE-LCH	lch(24.87, 60.98, 296.90°)
OKLab	oklab(36.3% -0.0098 -0.1575)
OKLCH	oklch(36.3% 0.158 266.5)
XYZ	xyz(6.4312, 4.3732, 26.4864)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18318F #8F7618

analogous

#186C8F #18318F #3B188F

triadic

#18318F #8F1831 #318F18

tetradic

#18318F #8F186C #8F7618 #188F3B

square

#18318F #8F186C #8F7618 #188F3B

split-complementary

#18318F #8F3B18 #6C8F18

monochromatic

#060D26 #0F1F5B #18318F #2143C3 #4263DF

Accessibility & contrast

On white

11.20

#18318F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#18318F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18318F

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18318F	#FFFFFF	#000000	##FFFFFF
##18318F	1.00	11.20	1.87	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004192

Deuteranopia (green-blind)

#00358D

Tritanopia (blue-blind)

#004A5B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #18318f;
/* rgb */ color: rgb(24, 49, 143);
/* oklch */ color: oklch(36.3% 0.158 266.5);

Tailwind

colors: {
  custom: {
    50: '#6c69b1',
    500: '#18318f',
    950: '#000000',
  },
}

SCSS

$custom: #18318f;
$custom-light: #6c69b1;
$custom-dark: #000000;

JSON

{
  "hex": "#18318f",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 143
  },
  "hsl": {
    "h": 227.395,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.36298,
    "c": 0.15777,
    "h": 266.5
  },
  "luminance": 0.04374
}

Semantic roles & 50–950 ramp

primary

#18318F

secondary

#C0A643

accent

#C83AEE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #18318F

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

Preview Lab → · Contrast checker → · Palette generator →