#18377F#18377F

#18377F is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.1% C 0.128 H 263.7°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#18377F
RGB	rgb(24, 55, 127)
HSL	hsl(222, 68%, 30%)
HSV	hsv(222, 81%, 50%)
CMYK	cmyk(81.1%, 56.7%, 0%, 50.2%)
CIE-LAB	lab(25.13, 16.95, -43.98)
CIE-LCH	lch(25.13, 47.13, 291.07°)
OKLab	oklab(36.06% -0.0141 -0.1268)
OKLCH	oklch(36.06% 0.128 263.7)
XYZ	xyz(5.5723, 4.4582, 20.6414)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18377F #7F6018

analogous

#186B7F #18377F #2D187F

triadic

#18377F #7F1837 #377F18

tetradic

#18377F #7F186B #7F6018 #187F2D

square

#18377F #7F186B #7F6018 #187F2D

split-complementary

#18377F #7F2D18 #6B7F18

monochromatic

#050B1A #0E214C #18377F #224DB2 #3869D9

Accessibility & contrast

On white

11.10

#18377F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#18377F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18377F

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18377F	#FFFFFF	#000000	##FFFFFF
##18377F	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004182

Deuteranopia (green-blind)

#00377E

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #18377f;
/* rgb */ color: rgb(24, 55, 127);
/* oklch */ color: oklch(36.1% 0.128 263.7);

Tailwind

colors: {
  custom: {
    50: '#676da5',
    500: '#18377f',
    950: '#000000',
  },
}

SCSS

$custom: #18377f;
$custom-light: #676da5;
$custom-dark: #000000;

JSON

{
  "hex": "#18377f",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 127
  },
  "hsl": {
    "h": 221.942,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.36061,
    "c": 0.12762,
    "h": 263.7
  },
  "luminance": 0.04459
}

Semantic roles & 50–950 ramp

primary

#18377F

secondary

#B3903F

accent

#B73DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18377F

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

Preview Lab → · Contrast checker → · Palette generator →