#181B7E#181B7E

#181B7E is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.160 H 270.8°. Best body text is #FFFFFF at 14.03:1 contrast (WCAG AA passes).

Color values

HEX	#181B7E
RGB	rgb(24, 27, 126)
HSL	hsl(238, 68%, 29%)
HSV	hsv(238, 81%, 49%)
CMYK	cmyk(81%, 78.6%, 0%, 50.6%)
CIE-LAB	lab(17.85, 35.44, -55.29)
CIE-LCH	lch(17.85, 65.67, 302.66°)
OKLab	oklab(30.68% 0.0022 -0.1601)
OKLCH	oklch(30.68% 0.16 270.8)
XYZ	xyz(4.5332, 2.4839, 19.9751)
Luminance	0.0248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B7E #7E7B18

analogous

#184E7E #181B7E #48187E

triadic

#181B7E #7E181B #1B7E18

tetradic

#181B7E #7E184E #7E7B18 #187E48

square

#181B7E #7E184E #7E7B18 #187E48

split-complementary

#181B7E #7E4818 #4E7E18

monochromatic

#05061A #0E104B #181B7E #2226B1 #373CD9

Accessibility & contrast

On white

14.03

#181B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#181B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B7E

14.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B7E	#FFFFFF	#000000	##FFFFFF
##181B7E	1.00	14.03	1.50	14.03
#FFFFFF	14.03	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003181

Deuteranopia (green-blind)

#00267C

Tritanopia (blue-blind)

#00394B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181b7e;
/* rgb */ color: rgb(24, 27, 126);
/* oklch */ color: oklch(30.7% 0.160 270.8);

Tailwind

colors: {
  custom: {
    50: '#6959a5',
    500: '#181b7e',
    950: '#000000',
  },
}

SCSS

$custom: #181b7e;
$custom-light: #6959a5;
$custom-dark: #000000;

JSON

{
  "hex": "#181b7e",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 126
  },
  "hsl": {
    "h": 238.235,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30683,
    "c": 0.16011,
    "h": 270.8
  },
  "luminance": 0.02484
}

Semantic roles & 50–950 ramp

primary

#181B7E

secondary

#B2AF3F

accent

#E63DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #181B7E

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

Preview Lab → · Contrast checker → · Palette generator →