#181F75#181F75

#181F75 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.3% C 0.144 H 270.7°. Best body text is #FFFFFF at 14.08:1 contrast (WCAG AA passes).

Color values

HEX	#181F75
RGB	rgb(24, 31, 117)
HSL	hsl(235, 66%, 28%)
HSV	hsv(235, 79%, 46%)
CMYK	cmyk(79.5%, 73.5%, 0%, 54.1%)
CIE-LAB	lab(17.73, 29.64, -49.72)
CIE-LCH	lch(17.73, 57.89, 300.80°)
OKLab	oklab(30.3% 0.0018 -0.1439)
OKLCH	oklch(30.3% 0.144 270.7)
XYZ	xyz(4.0765, 2.4581, 17.0858)
Luminance	0.0246 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F75 #756E18

analogous

#184D75 #181F75 #401875

triadic

#181F75 #75181F #1F7518

tetradic

#181F75 #75184D #756E18 #187540

square

#181F75 #75184D #756E18 #187540

split-complementary

#181F75 #754018 #4D7518

monochromatic

#050719 #0E1242 #181F75 #222CA8 #323FD5

Accessibility & contrast

On white

14.08

#181F75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#181F75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F75

14.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F75	#FFFFFF	#000000	##FFFFFF
##181F75	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)

#003078

Deuteranopia (green-blind)

#002773

Tritanopia (blue-blind)

#003747

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #181f75;
/* rgb */ color: rgb(24, 31, 117);
/* oklch */ color: oklch(30.3% 0.144 270.7);

Tailwind

colors: {
  custom: {
    50: '#665b9e',
    500: '#181f75',
    950: '#000000',
  },
}

SCSS

$custom: #181f75;
$custom-light: #665b9e;
$custom-dark: #000000;

JSON

{
  "hex": "#181f75",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 117
  },
  "hsl": {
    "h": 235.484,
    "s": 65.957,
    "l": 27.647
  },
  "oklch": {
    "l": 0.30299,
    "c": 0.14395,
    "h": 270.7
  },
  "luminance": 0.02459
}

Semantic roles & 50–950 ramp

primary

#181F75

secondary

#AAA23F

accent

#DC3FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #181F75

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

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