#18357D#18357D

#18357D is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.4% C 0.127 H 264.3°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#18357D
RGB	rgb(24, 53, 125)
HSL	hsl(223, 68%, 29%)
HSV	hsv(223, 81%, 49%)
CMYK	cmyk(80.8%, 57.6%, 0%, 51%)
CIE-LAB	lab(24.39, 17.54, -43.92)
CIE-LCH	lch(24.39, 47.30, 291.77°)
OKLab	oklab(35.45% -0.0127 -0.1267)
OKLCH	oklch(35.45% 0.127 264.3)
XYZ	xyz(5.3501, 4.2204, 19.9307)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18357D #7D6018

analogous

#18687D #18357D #2E187D

triadic

#18357D #7D1835 #357D18

tetradic

#18357D #7D1868 #7D6018 #187D2E

square

#18357D #7D1868 #7D6018 #187D2E

split-complementary

#18357D #7D2E18 #687D18

monochromatic

#050B1A #0E1F4A #18357D #224BB0 #3765D9

Accessibility & contrast

On white

11.39

#18357D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#18357D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18357D

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18357D	#FFFFFF	#000000	##FFFFFF
##18357D	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F7F

Deuteranopia (green-blind)

#00357C

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #18357d;
/* rgb */ color: rgb(24, 53, 125);
/* oklch */ color: oklch(35.4% 0.127 264.3);

Tailwind

colors: {
  custom: {
    50: '#666ba3',
    500: '#18357d',
    950: '#000000',
  },
}

SCSS

$custom: #18357d;
$custom-light: #666ba3;
$custom-dark: #000000;

JSON

{
  "hex": "#18357d",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 125
  },
  "hsl": {
    "h": 222.772,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.35448,
    "c": 0.12737,
    "h": 264.3
  },
  "luminance": 0.04221
}

Semantic roles & 50–950 ramp

primary

#18357D

secondary

#B2913F

accent

#B93DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18357D

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

Preview Lab → · Contrast checker → · Palette generator →