#18388F#18388F

#18388F is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.7% C 0.149 H 264.7°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#18388F
RGB	rgb(24, 56, 143)
HSL	hsl(224, 71%, 33%)
HSV	hsv(224, 83%, 56%)
CMYK	cmyk(83.2%, 60.8%, 0%, 43.9%)
CIE-LAB	lab(26.75, 22.77, -51.31)
CIE-LCH	lch(26.75, 56.13, 293.93°)
OKLab	oklab(37.69% -0.0138 -0.1484)
OKLCH	oklch(37.69% 0.149 264.7)
XYZ	xyz(6.7470, 5.0049, 26.5917)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18388F #8F6F18

analogous

#18738F #18388F #34188F

triadic

#18388F #8F1838 #388F18

tetradic

#18388F #8F1873 #8F6F18 #188F34

square

#18388F #8F1873 #8F6F18 #188F34

split-complementary

#18388F #8F3418 #738F18

monochromatic

#060F26 #0F235B #18388F #214DC3 #426CDF

Accessibility & contrast

On white

10.49

#18388F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#18388F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18388F

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18388F	#FFFFFF	#000000	##FFFFFF
##18388F	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004592

Deuteranopia (green-blind)

#003A8D

Tritanopia (blue-blind)

#004E5E

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #18388f;
/* rgb */ color: rgb(24, 56, 143);
/* oklch */ color: oklch(37.7% 0.149 264.7);

Tailwind

colors: {
  custom: {
    50: '#6b6eb1',
    500: '#18388f',
    950: '#000000',
  },
}

SCSS

$custom: #18388f;
$custom-light: #6b6eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#18388f",
  "rgb": {
    "r": 24,
    "g": 56,
    "b": 143
  },
  "hsl": {
    "h": 223.866,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37694,
    "c": 0.14902,
    "h": 264.7
  },
  "luminance": 0.05006
}

Semantic roles & 50–950 ramp

primary

#18388F

secondary

#C09E43

accent

#BE3AEE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #18388F

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

Preview Lab → · Contrast checker → · Palette generator →