#18378F#18378F

#18378F is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.5% C 0.150 H 264.9°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#18378F
RGB	rgb(24, 55, 143)
HSL	hsl(224, 71%, 33%)
HSV	hsv(224, 83%, 56%)
CMYK	cmyk(83.2%, 61.5%, 0%, 43.9%)
CIE-LAB	lab(26.47, 23.46, -51.76)
CIE-LCH	lch(26.47, 56.83, 294.38°)
OKLab	oklab(37.49% -0.0132 -0.1497)
OKLCH	oklch(37.49% 0.15 264.9)
XYZ	xyz(6.6990, 4.9089, 26.5757)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18378F #8F7018

analogous

#18728F #18378F #35188F

triadic

#18378F #8F1837 #378F18

tetradic

#18378F #8F1872 #8F7018 #188F35

square

#18378F #8F1872 #8F7018 #188F35

split-complementary

#18378F #8F3518 #728F18

monochromatic

#060F26 #0F235B #18378F #214BC3 #426BDF

Accessibility & contrast

On white

10.60

#18378F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#18378F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18378F

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18378F	#FFFFFF	#000000	##FFFFFF
##18378F	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004492

Deuteranopia (green-blind)

#00398D

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #18378f;
/* rgb */ color: rgb(24, 55, 143);
/* oklch */ color: oklch(37.5% 0.150 264.9);

Tailwind

colors: {
  custom: {
    50: '#6b6db1',
    500: '#18378f',
    950: '#000000',
  },
}

SCSS

$custom: #18378f;
$custom-light: #6b6db1;
$custom-dark: #000000;

JSON

{
  "hex": "#18378f",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 143
  },
  "hsl": {
    "h": 224.37,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37488,
    "c": 0.15028,
    "h": 264.9
  },
  "luminance": 0.0491
}

Semantic roles & 50–950 ramp

primary

#18378F

secondary

#C09F43

accent

#BF3AEE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #18378F

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

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