#181F61#181F61

#181F61 is a dark, moderate blue. Relative luminance 0.020; OKLCH L 28.2% C 0.116 H 271.9°. Best body text is #FFFFFF at 14.92:1 contrast (WCAG AA passes).

Color values

HEX	#181F61
RGB	rgb(24, 31, 97)
HSL	hsl(234, 60%, 24%)
HSV	hsv(234, 75%, 38%)
CMYK	cmyk(75.3%, 68%, 0%, 62%)
CIE-LAB	lab(15.68, 21.88, -40.03)
CIE-LCH	lch(15.68, 45.62, 298.66°)
OKLab	oklab(28.19% 0.0039 -0.1156)
OKLCH	oklch(28.19% 0.116 271.9)
XYZ	xyz(3.0236, 2.0369, 11.5408)
Luminance	0.0204 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F61 #615A18

analogous

#184361 #181F61 #351861

triadic

#181F61 #61181F #1F6118

tetradic

#181F61 #611843 #615A18 #186135

square

#181F61 #611843 #615A18 #186135

split-complementary

#181F61 #613518 #436118

monochromatic

#060819 #0C0F30 #181F61 #242F92 #303EC3

Accessibility & contrast

On white

14.92

#181F61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#181F61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F61

14.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F61	#FFFFFF	#000000	##FFFFFF
##181F61	1.00	14.92	1.41	14.92
#FFFFFF	14.92	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B63

Deuteranopia (green-blind)

#002460

Tritanopia (blue-blind)

#00303C

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #181f61;
/* rgb */ color: rgb(24, 31, 97);
/* oklch */ color: oklch(28.2% 0.116 271.9);

Tailwind

colors: {
  custom: {
    50: '#615a8f',
    500: '#181f61',
    950: '#000000',
  },
}

SCSS

$custom: #181f61;
$custom-light: #615a8f;
$custom-dark: #000000;

JSON

{
  "hex": "#181f61",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 97
  },
  "hsl": {
    "h": 234.247,
    "s": 60.331,
    "l": 23.725
  },
  "oklch": {
    "l": 0.28188,
    "c": 0.11567,
    "h": 271.9
  },
  "luminance": 0.02037
}

Semantic roles & 50–950 ramp

primary

#181F61

secondary

#978F3D

accent

#D444E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05040C

muted

#7A797D

Preview Lab

Preview with #181F61

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

Preview Lab → · Contrast checker → · Palette generator →