#18397F#18397F

#18397F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.5% C 0.125 H 262.8°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#18397F
RGB	rgb(24, 57, 127)
HSL	hsl(221, 68%, 30%)
HSV	hsv(221, 81%, 50%)
CMYK	cmyk(81.1%, 55.1%, 0%, 50.2%)
CIE-LAB	lab(25.72, 15.53, -43.02)
CIE-LCH	lch(25.72, 45.74, 289.85°)
OKLab	oklab(36.51% -0.0156 -0.124)
OKLCH	oklch(36.51% 0.125 262.8)
XYZ	xyz(5.6692, 4.6521, 20.6737)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18397F #7F5E18

analogous

#186D7F #18397F #2B187F

triadic

#18397F #7F1839 #397F18

tetradic

#18397F #7F186D #7F5E18 #187F2B

square

#18397F #7F186D #7F5E18 #187F2B

split-complementary

#18397F #7F2B18 #6D7F18

monochromatic

#050C1A #0E224C #18397F #2250B2 #386CD9

Accessibility & contrast

On white

10.88

#18397F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#18397F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18397F

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18397F	#FFFFFF	#000000	##FFFFFF
##18397F	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#034281

Deuteranopia (green-blind)

#00387E

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #18397f;
/* rgb */ color: rgb(24, 57, 127);
/* oklch */ color: oklch(36.5% 0.125 262.8);

Tailwind

colors: {
  custom: {
    50: '#676ea5',
    500: '#18397f',
    950: '#000000',
  },
}

SCSS

$custom: #18397f;
$custom-light: #676ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#18397f",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 127
  },
  "hsl": {
    "h": 220.777,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.36506,
    "c": 0.12498,
    "h": 262.8
  },
  "luminance": 0.04653
}

Semantic roles & 50–950 ramp

primary

#18397F

secondary

#B38E3F

accent

#B33DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18397F

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

Preview Lab → · Contrast checker → · Palette generator →