#181D7C#181D7C

#181D7C is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.8% C 0.155 H 270.6°. Best body text is #FFFFFF at 13.95:1 contrast (WCAG AA passes).

Color values

HEX	#181D7C
RGB	rgb(24, 29, 124)
HSL	hsl(237, 68%, 29%)
HSV	hsv(237, 81%, 49%)
CMYK	cmyk(80.6%, 76.6%, 0%, 51.4%)
CIE-LAB	lab(18.04, 33.51, -53.69)
CIE-LCH	lch(18.04, 63.29, 301.97°)
OKLab	oklab(30.76% 0.0017 -0.1555)
OKLCH	oklch(30.76% 0.155 270.6)
XYZ	xyz(4.4529, 2.5277, 19.3181)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D7C #7C7718

analogous

#184F7C #181D7C #45187C

triadic

#181D7C #7C181D #1D7C18

tetradic

#181D7C #7C184F #7C7718 #187C45

square

#181D7C #7C184F #7C7718 #187C45

split-complementary

#181D7C #7C4518 #4F7C18

monochromatic

#05061A #0E1149 #181D7C #2229AF #363ED8

Accessibility & contrast

On white

13.95

#181D7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#181D7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D7C

13.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D7C	#FFFFFF	#000000	##FFFFFF
##181D7C	1.00	13.95	1.51	13.95
#FFFFFF	13.95	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317F

Deuteranopia (green-blind)

#00277A

Tritanopia (blue-blind)

#00394B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181d7c;
/* rgb */ color: rgb(24, 29, 124);
/* oklch */ color: oklch(30.8% 0.155 270.6);

Tailwind

colors: {
  custom: {
    50: '#685aa3',
    500: '#181d7c',
    950: '#000000',
  },
}

SCSS

$custom: #181d7c;
$custom-light: #685aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#181d7c",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 124
  },
  "hsl": {
    "h": 237,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30755,
    "c": 0.15548,
    "h": 270.6
  },
  "luminance": 0.02528
}

Semantic roles & 50–950 ramp

primary

#181D7C

secondary

#B1AB3F

accent

#E23DEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181D7C

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

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