#181C7B#181C7B

#181C7B is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.155 H 270.9°. Best body text is #FFFFFF at 14.08:1 contrast (WCAG AA passes).

Color values

HEX	#181C7B
RGB	rgb(24, 28, 123)
HSL	hsl(238, 67%, 29%)
HSV	hsv(238, 80%, 48%)
CMYK	cmyk(80.5%, 77.2%, 0%, 51.8%)
CIE-LAB	lab(17.71, 33.76, -53.60)
CIE-LCH	lch(17.71, 63.35, 302.21°)
OKLab	oklab(30.49% 0.0023 -0.1552)
OKLCH	oklch(30.49% 0.155 270.9)
XYZ	xyz(4.3659, 2.4543, 18.9787)
Luminance	0.0245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C7B #7B7718

analogous

#184E7B #181C7B #46187B

triadic

#181C7B #7B181C #1C7B18

tetradic

#181C7B #7B184E #7B7718 #187B46

square

#181C7B #7B184E #7B7718 #187B46

split-complementary

#181C7B #7B4618 #4E7B18

monochromatic

#05061A #0E1048 #181C7B #2228AE #363CD8

Accessibility & contrast

On white

14.08

#181C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#181C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C7B

14.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C7B	#FFFFFF	#000000	##FFFFFF
##181C7B	1.00	14.08	1.49	14.08
#FFFFFF	14.08	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307E

Deuteranopia (green-blind)

#002679

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #181c7b;
/* rgb */ color: rgb(24, 28, 123);
/* oklch */ color: oklch(30.5% 0.155 270.9);

Tailwind

colors: {
  custom: {
    50: '#6859a2',
    500: '#181c7b',
    950: '#000000',
  },
}

SCSS

$custom: #181c7b;
$custom-light: #6859a2;
$custom-dark: #000000;

JSON

{
  "hex": "#181c7b",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 123
  },
  "hsl": {
    "h": 237.576,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30485,
    "c": 0.15523,
    "h": 270.9
  },
  "luminance": 0.02455
}

Semantic roles & 50–950 ramp

primary

#181C7B

secondary

#B0AB3F

accent

#E33EEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #181C7B

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

Preview Lab → · Contrast checker → · Palette generator →