#18397C#18397C

#18397C is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.3% C 0.121 H 262.4°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#18397C
RGB	rgb(24, 57, 124)
HSL	hsl(220, 68%, 29%)
HSV	hsv(220, 81%, 49%)
CMYK	cmyk(80.6%, 54%, 0%, 51.4%)
CIE-LAB	lab(25.49, 14.29, -41.51)
CIE-LCH	lch(25.49, 43.90, 289.00°)
OKLab	oklab(36.26% -0.016 -0.1195)
OKLCH	oklch(36.26% 0.121 262.4)
XYZ	xyz(5.4766, 4.5750, 19.6593)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18397C #7C5B18

analogous

#186B7C #18397C #29187C

triadic

#18397C #7C1839 #397C18

tetradic

#18397C #7C186B #7C5B18 #187C29

square

#18397C #7C186B #7C5B18 #187C29

split-complementary

#18397C #7C2918 #6B7C18

monochromatic

#050C1A #0E2149 #18397C #2251AF #366CD8

Accessibility & contrast

On white

10.96

#18397C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#18397C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18397C

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18397C	#FFFFFF	#000000	##FFFFFF
##18397C	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A417E

Deuteranopia (green-blind)

#00387B

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #18397c;
/* rgb */ color: rgb(24, 57, 124);
/* oklch */ color: oklch(36.3% 0.121 262.4);

Tailwind

colors: {
  custom: {
    50: '#666ea2',
    500: '#18397c',
    950: '#000000',
  },
}

SCSS

$custom: #18397c;
$custom-light: #666ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#18397c",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 124
  },
  "hsl": {
    "h": 220.2,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.36257,
    "c": 0.12061,
    "h": 262.4
  },
  "luminance": 0.04576
}

Semantic roles & 50–950 ramp

primary

#18397C

secondary

#B18B3F

accent

#B13DEA

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18397C

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

Preview Lab → · Contrast checker → · Palette generator →