#181E7B#181E7B

#181E7B is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.8% C 0.153 H 270.5°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#181E7B
RGB	rgb(24, 30, 123)
HSL	hsl(236, 67%, 29%)
HSV	hsv(236, 80%, 48%)
CMYK	cmyk(80.5%, 75.6%, 0%, 51.8%)
CIE-LAB	lab(18.15, 32.52, -52.87)
CIE-LCH	lch(18.15, 62.07, 301.60°)
OKLab	oklab(30.8% 0.0014 -0.1531)
OKLCH	oklch(30.8% 0.153 270.5)
XYZ	xyz(4.4149, 2.5523, 18.9950)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E7B #7B7518

analogous

#18507B #181E7B #44187B

triadic

#181E7B #7B181E #1E7B18

tetradic

#181E7B #7B1850 #7B7518 #187B44

square

#181E7B #7B1850 #7B7518 #187B44

split-complementary

#181E7B #7B4418 #507B18

monochromatic

#05061A #0E1248 #181E7B #222AAE #3640D8

Accessibility & contrast

On white

13.90

#181E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#181E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E7B

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E7B	#FFFFFF	#000000	##FFFFFF
##181E7B	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002779

Tritanopia (blue-blind)

#00394A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181e7b;
/* rgb */ color: rgb(24, 30, 123);
/* oklch */ color: oklch(30.8% 0.153 270.5);

Tailwind

colors: {
  custom: {
    50: '#685ba2',
    500: '#181e7b',
    950: '#000000',
  },
}

SCSS

$custom: #181e7b;
$custom-light: #685ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#181e7b",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 123
  },
  "hsl": {
    "h": 236.364,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.308,
    "c": 0.1531,
    "h": 270.5
  },
  "luminance": 0.02553
}

Semantic roles & 50–950 ramp

primary

#181E7B

secondary

#B0A93F

accent

#E03EEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181E7B

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

Preview Lab → · Contrast checker → · Palette generator →