#181FDD#181FDD

#181FDD is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 42.8% C 0.266 H 266.6°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#181FDD
RGB	rgb(24, 31, 221)
HSL	hsl(238, 80%, 48%)
HSV	hsv(238, 89%, 87%)
CMYK	cmyk(89.1%, 86%, 0%, 13.3%)
CIE-LAB	lab(30.38, 63.59, -91.73)
CIE-LCH	lch(30.38, 111.61, 304.73°)
OKLab	oklab(42.77% -0.0157 -0.2655)
OKLCH	oklch(42.77% 0.266 266.6)
XYZ	xyz(13.9133, 6.3928, 68.8932)
Luminance	0.0640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181FDD #DDD618

analogous

#1881DD #181FDD #7318DD

triadic

#181FDD #DD181F #1FDD18

tetradic

#181FDD #DD1881 #DDD618 #18DD73

square

#181FDD #DD1881 #DDD618 #18DD73

split-complementary

#181FDD #DD7318 #81DD18

monochromatic

#0C106F #1217A6 #181FDD #474DEB #7E82F1

Accessibility & contrast

On white

9.21

#181FDD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#181FDD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181FDD

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181FDD	#FFFFFF	#000000	##FFFFFF
##181FDD	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052E2

Deuteranopia (green-blind)

#003DDA

Tritanopia (blue-blind)

#006184

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #181fdd;
/* rgb */ color: rgb(24, 31, 221);
/* oklch */ color: oklch(42.8% 0.266 266.6);

Tailwind

colors: {
  custom: {
    50: '#8362e9',
    500: '#181fdd',
    950: '#000000',
  },
}

SCSS

$custom: #181fdd;
$custom-light: #8362e9;
$custom-dark: #000000;

JSON

{
  "hex": "#181fdd",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 221
  },
  "hsl": {
    "h": 237.868,
    "s": 80.408,
    "l": 48.039
  },
  "oklch": {
    "l": 0.42773,
    "c": 0.26598,
    "h": 266.6
  },
  "luminance": 0.06395
}

Semantic roles & 50–950 ramp

primary

#181FDD

secondary

#D9D678

accent

#F031F7

background

#F9F6FE

surface

#F1EBFD

border

#CBC6D5

text

#0D0616

muted

#7E7A84

Preview Lab

Preview with #181FDD

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

Preview Lab → · Contrast checker → · Palette generator →