#18397E#18397E

#18397E is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.4% C 0.124 H 262.7°. Best body text is #FFFFFF at 10.91:1 contrast (WCAG AA passes).

Color values

HEX	#18397E
RGB	rgb(24, 57, 126)
HSL	hsl(221, 68%, 29%)
HSV	hsv(221, 81%, 49%)
CMYK	cmyk(81%, 54.8%, 0%, 50.6%)
CIE-LAB	lab(25.64, 15.12, -42.52)
CIE-LCH	lch(25.64, 45.13, 289.57°)
OKLab	oklab(36.42% -0.0158 -0.1225)
OKLCH	oklch(36.42% 0.124 262.7)
XYZ	xyz(5.6044, 4.6262, 20.3322)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18397E #7E5D18

analogous

#186C7E #18397E #2A187E

triadic

#18397E #7E1839 #397E18

tetradic

#18397E #7E186C #7E5D18 #187E2A

square

#18397E #7E186C #7E5D18 #187E2A

split-complementary

#18397E #7E2A18 #6C7E18

monochromatic

#050C1A #0E224B #18397E #2250B1 #376CD9

Accessibility & contrast

On white

10.91

#18397E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#18397E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18397E

10.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18397E	#FFFFFF	#000000	##FFFFFF
##18397E	1.00	10.91	1.93	10.91
#FFFFFF	10.91	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064280

Deuteranopia (green-blind)

#00387D

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #18397e;
/* rgb */ color: rgb(24, 57, 126);
/* oklch */ color: oklch(36.4% 0.124 262.7);

Tailwind

colors: {
  custom: {
    50: '#666ea4',
    500: '#18397e',
    950: '#000000',
  },
}

SCSS

$custom: #18397e;
$custom-light: #666ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#18397e",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 126
  },
  "hsl": {
    "h": 220.588,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36423,
    "c": 0.12353,
    "h": 262.7
  },
  "luminance": 0.04627
}

Semantic roles & 50–950 ramp

primary

#18397E

secondary

#B28D3F

accent

#B33DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18397E

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

Preview Lab → · Contrast checker → · Palette generator →