#181D7E#181D7E

#181D7E is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.0% C 0.158 H 270.5°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#181D7E
RGB	rgb(24, 29, 126)
HSL	hsl(237, 68%, 29%)
HSV	hsv(237, 81%, 49%)
CMYK	cmyk(81%, 77%, 0%, 50.6%)
CIE-LAB	lab(18.27, 34.24, -54.58)
CIE-LCH	lch(18.27, 64.43, 302.10°)
OKLab	oklab(30.99% 0.0014 -0.1581)
OKLCH	oklch(30.99% 0.158 270.5)
XYZ	xyz(4.5807, 2.5788, 19.9910)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D7E #7E7918

analogous

#18507E #181D7E #46187E

triadic

#181D7E #7E181D #1D7E18

tetradic

#181D7E #7E1850 #7E7918 #187E46

square

#181D7E #7E1850 #7E7918 #187E46

split-complementary

#181D7E #7E4618 #507E18

monochromatic

#05061A #0E114B #181D7E #2229B1 #373FD9

Accessibility & contrast

On white

13.85

#181D7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#181D7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D7E

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D7E	#FFFFFF	#000000	##FFFFFF
##181D7E	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003281

Deuteranopia (green-blind)

#00277C

Tritanopia (blue-blind)

#00394C

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #181d7e;
/* rgb */ color: rgb(24, 29, 126);
/* oklch */ color: oklch(31.0% 0.158 270.5);

Tailwind

colors: {
  custom: {
    50: '#695aa4',
    500: '#181d7e',
    950: '#000000',
  },
}

SCSS

$custom: #181d7e;
$custom-light: #695aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#181d7e",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 126
  },
  "hsl": {
    "h": 237.059,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30985,
    "c": 0.15809,
    "h": 270.5
  },
  "luminance": 0.02579
}

Semantic roles & 50–950 ramp

primary

#181D7E

secondary

#B2AD3F

accent

#E23DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181D7E

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

Preview Lab → · Contrast checker → · Palette generator →