#18357C#18357C

#18357C is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.4% C 0.126 H 264.2°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#18357C
RGB	rgb(24, 53, 124)
HSL	hsl(223, 68%, 29%)
HSV	hsv(223, 81%, 49%)
CMYK	cmyk(80.6%, 57.3%, 0%, 51.4%)
CIE-LAB	lab(24.31, 17.13, -43.43)
CIE-LCH	lch(24.31, 46.68, 291.53°)
OKLab	oklab(35.36% -0.0128 -0.1253)
OKLCH	oklch(35.36% 0.126 264.2)
XYZ	xyz(5.2866, 4.1950, 19.5960)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18357C #7C5F18

analogous

#18677C #18357C #2D187C

triadic

#18357C #7C1835 #357C18

tetradic

#18357C #7C1867 #7C5F18 #187C2D

square

#18357C #7C1867 #7C5F18 #187C2D

split-complementary

#18357C #7C2D18 #677C18

monochromatic

#050B1A #0E1F49 #18357C #224BAF #3665D8

Accessibility & contrast

On white

11.42

#18357C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#18357C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18357C

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18357C	#FFFFFF	#000000	##FFFFFF
##18357C	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F7E

Deuteranopia (green-blind)

#00357B

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #18357c;
/* rgb */ color: rgb(24, 53, 124);
/* oklch */ color: oklch(35.4% 0.126 264.2);

Tailwind

colors: {
  custom: {
    50: '#666ba2',
    500: '#18357c',
    950: '#000000',
  },
}

SCSS

$custom: #18357c;
$custom-light: #666ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#18357c",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 124
  },
  "hsl": {
    "h": 222.6,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.35361,
    "c": 0.12591,
    "h": 264.2
  },
  "luminance": 0.04196
}

Semantic roles & 50–950 ramp

primary

#18357C

secondary

#B1903F

accent

#B83DEA

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18357C

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

Preview Lab → · Contrast checker → · Palette generator →