#181D7F#181D7F

#181D7F is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.1% C 0.159 H 270.4°. Best body text is #FFFFFF at 13.81:1 contrast (WCAG AA passes).

Color values

HEX	#181D7F
RGB	rgb(24, 29, 127)
HSL	hsl(237, 68%, 30%)
HSV	hsv(237, 81%, 50%)
CMYK	cmyk(81.1%, 77.2%, 0%, 50.2%)
CIE-LAB	lab(18.39, 34.60, -55.03)
CIE-LCH	lch(18.39, 65.00, 302.16°)
OKLab	oklab(31.1% 0.0012 -0.1594)
OKLCH	oklch(31.1% 0.159 270.4)
XYZ	xyz(4.6455, 2.6047, 20.3325)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D7F #7F7A18

analogous

#18517F #181D7F #46187F

triadic

#181D7F #7F181D #1D7F18

tetradic

#181D7F #7F1851 #7F7A18 #187F46

square

#181D7F #7F1851 #7F7A18 #187F46

split-complementary

#181D7F #7F4618 #517F18

monochromatic

#05061A #0E114C #181D7F #2229B2 #3840D9

Accessibility & contrast

On white

13.81

#181D7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#181D7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D7F

13.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D7F	#FFFFFF	#000000	##FFFFFF
##181D7F	1.00	13.81	1.52	13.81
#FFFFFF	13.81	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003282

Deuteranopia (green-blind)

#00287D

Tritanopia (blue-blind)

#003A4C

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #181d7f;
/* rgb */ color: rgb(24, 29, 127);
/* oklch */ color: oklch(31.1% 0.159 270.4);

Tailwind

colors: {
  custom: {
    50: '#695aa5',
    500: '#181d7f',
    950: '#000000',
  },
}

SCSS

$custom: #181d7f;
$custom-light: #695aa5;
$custom-dark: #000000;

JSON

{
  "hex": "#181d7f",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 127
  },
  "hsl": {
    "h": 237.087,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.311,
    "c": 0.15938,
    "h": 270.4
  },
  "luminance": 0.02605
}

Semantic roles & 50–950 ramp

primary

#181D7F

secondary

#B3AE3F

accent

#E33DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #181D7F

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

Preview Lab → · Contrast checker → · Palette generator →