#181C7F#181C7F

#181C7F is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.160 H 270.6°. Best body text is #FFFFFF at 13.89:1 contrast (WCAG AA passes).

Color values

HEX	#181C7F
RGB	rgb(24, 28, 127)
HSL	hsl(238, 68%, 30%)
HSV	hsv(238, 81%, 50%)
CMYK	cmyk(81.1%, 78%, 0%, 50.2%)
CIE-LAB	lab(18.17, 35.20, -55.38)
CIE-LCH	lch(18.17, 65.62, 302.44°)
OKLab	oklab(30.95% 0.0016 -0.1604)
OKLCH	oklch(30.95% 0.16 270.6)
XYZ	xyz(4.6214, 2.5565, 20.3244)
Luminance	0.0256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C7F #7F7B18

analogous

#18507F #181C7F #48187F

triadic

#181C7F #7F181C #1C7F18

tetradic

#181C7F #7F1850 #7F7B18 #187F48

square

#181C7F #7F1850 #7F7B18 #187F48

split-complementary

#181C7F #7F4818 #507F18

monochromatic

#05061A #0E114C #181C7F #2227B2 #383ED9

Accessibility & contrast

On white

13.89

#181C7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#181C7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C7F

13.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C7F	#FFFFFF	#000000	##FFFFFF
##181C7F	1.00	13.89	1.51	13.89
#FFFFFF	13.89	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003182

Deuteranopia (green-blind)

#00277D

Tritanopia (blue-blind)

#00394C

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181c7f;
/* rgb */ color: rgb(24, 28, 127);
/* oklch */ color: oklch(30.9% 0.160 270.6);

Tailwind

colors: {
  custom: {
    50: '#6959a5',
    500: '#181c7f',
    950: '#000000',
  },
}

SCSS

$custom: #181c7f;
$custom-light: #6959a5;
$custom-dark: #000000;

JSON

{
  "hex": "#181c7f",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 127
  },
  "hsl": {
    "h": 237.67,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.30949,
    "c": 0.1604,
    "h": 270.6
  },
  "luminance": 0.02557
}

Semantic roles & 50–950 ramp

primary

#181C7F

secondary

#B3AF3F

accent

#E43DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #181C7F

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

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