#18357B#18357B

#18357B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.3% C 0.124 H 264.1°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#18357B
RGB	rgb(24, 53, 123)
HSL	hsl(222, 67%, 29%)
HSV	hsv(222, 80%, 48%)
CMYK	cmyk(80.5%, 56.9%, 0%, 51.8%)
CIE-LAB	lab(24.23, 16.72, -42.92)
CIE-LCH	lch(24.23, 46.06, 291.28°)
OKLab	oklab(35.27% -0.0129 -0.1238)
OKLCH	oklch(35.27% 0.124 264.1)
XYZ	xyz(5.2237, 4.1699, 19.2646)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18357B #7B5E18

analogous

#18677B #18357B #2D187B

triadic

#18357B #7B1835 #357B18

tetradic

#18357B #7B1867 #7B5E18 #187B2D

square

#18357B #7B1867 #7B5E18 #187B2D

split-complementary

#18357B #7B2D18 #677B18

monochromatic

#050B1A #0E1F48 #18357B #224BAE #3665D8

Accessibility & contrast

On white

11.45

#18357B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#18357B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18357B

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18357B	#FFFFFF	#000000	##FFFFFF
##18357B	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7D

Deuteranopia (green-blind)

#00357A

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #18357b;
/* rgb */ color: rgb(24, 53, 123);
/* oklch */ color: oklch(35.3% 0.124 264.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#18357b",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 123
  },
  "hsl": {
    "h": 222.424,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.35274,
    "c": 0.12446,
    "h": 264.1
  },
  "luminance": 0.0417
}

Semantic roles & 50–950 ramp

primary

#18357B

secondary

#B08F3F

accent

#B83EEA

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18357B

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

Preview Lab → · Contrast checker → · Palette generator →