#181C7E#181C7E

#181C7E is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.8% C 0.159 H 270.6°. Best body text is #FFFFFF at 13.94:1 contrast (WCAG AA passes).

Color values

HEX	#181C7E
RGB	rgb(24, 28, 126)
HSL	hsl(238, 68%, 29%)
HSV	hsv(238, 81%, 49%)
CMYK	cmyk(81%, 77.8%, 0%, 50.6%)
CIE-LAB	lab(18.06, 34.84, -54.94)
CIE-LCH	lch(18.06, 65.06, 302.38°)
OKLab	oklab(30.83% 0.0018 -0.1591)
OKLCH	oklch(30.83% 0.159 270.6)
XYZ	xyz(4.5566, 2.5305, 19.9829)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C7E #7E7A18

analogous

#184F7E #181C7E #47187E

triadic

#181C7E #7E181C #1C7E18

tetradic

#181C7E #7E184F #7E7A18 #187E47

square

#181C7E #7E184F #7E7A18 #187E47

split-complementary

#181C7E #7E4718 #4F7E18

monochromatic

#05061A #0E114B #181C7E #2227B1 #373ED9

Accessibility & contrast

On white

13.94

#181C7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#181C7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C7E

13.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C7E	#FFFFFF	#000000	##FFFFFF
##181C7E	1.00	13.94	1.51	13.94
#FFFFFF	13.94	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003181

Deuteranopia (green-blind)

#00277C

Tritanopia (blue-blind)

#00394C

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181c7e;
/* rgb */ color: rgb(24, 28, 126);
/* oklch */ color: oklch(30.8% 0.159 270.6);

Tailwind

colors: {
  custom: {
    50: '#6959a5',
    500: '#181c7e',
    950: '#000000',
  },
}

SCSS

$custom: #181c7e;
$custom-light: #6959a5;
$custom-dark: #000000;

JSON

{
  "hex": "#181c7e",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 126
  },
  "hsl": {
    "h": 237.647,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30832,
    "c": 0.15911,
    "h": 270.6
  },
  "luminance": 0.02531
}

Semantic roles & 50–950 ramp

primary

#181C7E

secondary

#B2AE3F

accent

#E43DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181C7E

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

Preview Lab → · Contrast checker → · Palette generator →