#18397D#18397D

#18397D is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.3% C 0.122 H 262.5°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#18397D
RGB	rgb(24, 57, 125)
HSL	hsl(220, 68%, 29%)
HSV	hsv(220, 81%, 49%)
CMYK	cmyk(80.8%, 54.4%, 0%, 51%)
CIE-LAB	lab(25.56, 14.71, -42.01)
CIE-LCH	lch(25.56, 44.51, 289.29°)
OKLab	oklab(36.34% -0.0159 -0.121)
OKLCH	oklch(36.34% 0.122 262.5)
XYZ	xyz(5.5402, 4.6005, 19.9941)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18397D #7D5C18

analogous

#186C7D #18397D #2A187D

triadic

#18397D #7D1839 #397D18

tetradic

#18397D #7D186C #7D5C18 #187D2A

square

#18397D #7D186C #7D5C18 #187D2A

split-complementary

#18397D #7D2A18 #6C7D18

monochromatic

#050C1A #0E224A #18397D #2250B0 #376CD9

Accessibility & contrast

On white

10.94

#18397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#18397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18397D

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18397D	#FFFFFF	#000000	##FFFFFF
##18397D	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08417F

Deuteranopia (green-blind)

#00387C

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #18397d;
/* rgb */ color: rgb(24, 57, 125);
/* oklch */ color: oklch(36.3% 0.122 262.5);

Tailwind

colors: {
  custom: {
    50: '#666ea3',
    500: '#18397d',
    950: '#000000',
  },
}

SCSS

$custom: #18397d;
$custom-light: #666ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#18397d",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 220.396,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.3634,
    "c": 0.12208,
    "h": 262.5
  },
  "luminance": 0.04601
}

Semantic roles & 50–950 ramp

primary

#18397D

secondary

#B28C3F

accent

#B23DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18397D

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

Preview Lab → · Contrast checker → · Palette generator →