#18377E#18377E

#18377E is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.0% C 0.126 H 263.5°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#18377E
RGB	rgb(24, 55, 126)
HSL	hsl(222, 68%, 29%)
HSV	hsv(222, 81%, 49%)
CMYK	cmyk(81%, 56.3%, 0%, 50.6%)
CIE-LAB	lab(25.05, 16.53, -43.48)
CIE-LCH	lch(25.05, 46.51, 290.82°)
OKLab	oklab(35.98% -0.0142 -0.1254)
OKLCH	oklch(35.98% 0.126 263.5)
XYZ	xyz(5.5074, 4.4323, 20.2999)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18377E #7E5F18

analogous

#186A7E #18377E #2C187E

triadic

#18377E #7E1837 #377E18

tetradic

#18377E #7E186A #7E5F18 #187E2C

square

#18377E #7E186A #7E5F18 #187E2C

split-complementary

#18377E #7E2C18 #6A7E18

monochromatic

#050B1A #0E214B #18377E #224DB1 #3769D9

Accessibility & contrast

On white

11.13

#18377E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#18377E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18377E

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18377E	#FFFFFF	#000000	##FFFFFF
##18377E	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004080

Deuteranopia (green-blind)

#00377D

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #18377e;
/* rgb */ color: rgb(24, 55, 126);
/* oklch */ color: oklch(36.0% 0.126 263.5);

Tailwind

colors: {
  custom: {
    50: '#676da4',
    500: '#18377e',
    950: '#000000',
  },
}

SCSS

$custom: #18377e;
$custom-light: #676da4;
$custom-dark: #000000;

JSON

{
  "hex": "#18377e",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 126
  },
  "hsl": {
    "h": 221.765,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.35975,
    "c": 0.12617,
    "h": 263.5
  },
  "luminance": 0.04433
}

Semantic roles & 50–950 ramp

primary

#18377E

secondary

#B28F3F

accent

#B63DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18377E

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

Preview Lab → · Contrast checker → · Palette generator →