#18357E#18357E

#18357E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.5% C 0.129 H 264.4°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#18357E
RGB	rgb(24, 53, 126)
HSL	hsl(223, 68%, 29%)
HSV	hsv(223, 81%, 49%)
CMYK	cmyk(81%, 57.9%, 0%, 50.6%)
CIE-LAB	lab(24.47, 17.95, -44.42)
CIE-LCH	lch(24.47, 47.91, 292.00°)
OKLab	oklab(35.53% -0.0127 -0.1282)
OKLCH	oklch(35.53% 0.129 264.4)
XYZ	xyz(5.4143, 4.2461, 20.2688)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18357E #7E6118

analogous

#18687E #18357E #2E187E

triadic

#18357E #7E1835 #357E18

tetradic

#18357E #7E1868 #7E6118 #187E2E

square

#18357E #7E1868 #7E6118 #187E2E

split-complementary

#18357E #7E2E18 #687E18

monochromatic

#050B1A #0E1F4B #18357E #224BB1 #3765D9

Accessibility & contrast

On white

11.36

#18357E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#18357E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18357E

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18357E	#FFFFFF	#000000	##FFFFFF
##18357E	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F81

Deuteranopia (green-blind)

#00367D

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #18357e;
/* rgb */ color: rgb(24, 53, 126);
/* oklch */ color: oklch(35.5% 0.129 264.4);

Tailwind

colors: {
  custom: {
    50: '#676ba4',
    500: '#18357e',
    950: '#000000',
  },
}

SCSS

$custom: #18357e;
$custom-light: #676ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#18357e",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 126
  },
  "hsl": {
    "h": 222.941,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.35535,
    "c": 0.12881,
    "h": 264.4
  },
  "luminance": 0.04247
}

Semantic roles & 50–950 ramp

primary

#18357E

secondary

#B2923F

accent

#B93DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18357E

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

Preview Lab → · Contrast checker → · Palette generator →