#181C61#181C61

#181C61 is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.6% C 0.120 H 272.9°. Best body text is #FFFFFF at 15.24:1 contrast (WCAG AA passes).

Color values

HEX	#181C61
RGB	rgb(24, 28, 97)
HSL	hsl(237, 60%, 24%)
HSV	hsv(237, 75%, 38%)
CMYK	cmyk(75.3%, 71.1%, 0%, 62%)
CIE-LAB	lab(14.89, 23.99, -41.33)
CIE-LCH	lch(14.89, 47.79, 300.13°)
OKLab	oklab(27.61% 0.0061 -0.1194)
OKLCH	oklch(27.61% 0.12 272.9)
XYZ	xyz(2.9489, 1.8875, 11.5159)
Luminance	0.0189 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C61 #615D18

analogous

#184061 #181C61 #381861

triadic

#181C61 #61181C #1C6118

tetradic

#181C61 #611840 #615D18 #186138

square

#181C61 #611840 #615D18 #186138

split-complementary

#181C61 #613818 #406118

monochromatic

#060719 #0C0E30 #181C61 #242A92 #3038C3

Accessibility & contrast

On white

15.24

#181C61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#181C61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C61

15.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C61	#FFFFFF	#000000	##FFFFFF
##181C61	1.00	15.24	1.38	15.24
#FFFFFF	15.24	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002963

Deuteranopia (green-blind)

#002260

Tritanopia (blue-blind)

#002E3B

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181c61;
/* rgb */ color: rgb(24, 28, 97);
/* oklch */ color: oklch(27.6% 0.120 272.9);

Tailwind

colors: {
  custom: {
    50: '#61588f',
    500: '#181c61',
    950: '#000000',
  },
}

SCSS

$custom: #181c61;
$custom-light: #61588f;
$custom-dark: #000000;

JSON

{
  "hex": "#181c61",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 97
  },
  "hsl": {
    "h": 236.712,
    "s": 60.331,
    "l": 23.725
  },
  "oklch": {
    "l": 0.27607,
    "c": 0.1196,
    "h": 272.9
  },
  "luminance": 0.01888
}

Semantic roles & 50–950 ramp

primary

#181C61

secondary

#97923D

accent

#DB44E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #181C61

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

Preview Lab → · Contrast checker → · Palette generator →