#181F7D#181F7D

#181F7D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.2% C 0.155 H 270.3°. Best body text is #FFFFFF at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#181F7D
RGB	rgb(24, 31, 125)
HSL	hsl(236, 68%, 29%)
HSV	hsv(236, 81%, 49%)
CMYK	cmyk(80.8%, 75.2%, 0%, 51%)
CIE-LAB	lab(18.60, 32.63, -53.40)
CIE-LCH	lch(18.60, 62.58, 301.42°)
OKLab	oklab(31.19% 0.0007 -0.1546)
OKLCH	oklch(31.19% 0.155 270.3)
XYZ	xyz(4.5671, 2.6543, 19.6697)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F7D #7D7618

analogous

#18527D #181F7D #44187D

triadic

#181F7D #7D181F #1F7D18

tetradic

#181F7D #7D1852 #7D7618 #187D44

square

#181F7D #7D1852 #7D7618 #187D44

split-complementary

#181F7D #7D4418 #527D18

monochromatic

#05061A #0E124A #181F7D #222CB0 #3742D9

Accessibility & contrast

On white

13.72

#181F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#181F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F7D

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F7D	#FFFFFF	#000000	##FFFFFF
##181F7D	1.00	13.72	1.53	13.72
#FFFFFF	13.72	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003280

Deuteranopia (green-blind)

#00287B

Tritanopia (blue-blind)

#003A4C

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #181f7d;
/* rgb */ color: rgb(24, 31, 125);
/* oklch */ color: oklch(31.2% 0.155 270.3);

Tailwind

colors: {
  custom: {
    50: '#685ba4',
    500: '#181f7d',
    950: '#000000',
  },
}

SCSS

$custom: #181f7d;
$custom-light: #685ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#181f7d",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 125
  },
  "hsl": {
    "h": 235.842,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.31188,
    "c": 0.15465,
    "h": 270.3
  },
  "luminance": 0.02655
}

Semantic roles & 50–950 ramp

primary

#181F7D

secondary

#B2AA3F

accent

#DF3DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181F7D

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

Preview Lab → · Contrast checker → · Palette generator →