#181F7E#181F7E

#181F7E is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.3% C 0.156 H 270.2°. Best body text is #FFFFFF at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#181F7E
RGB	rgb(24, 31, 126)
HSL	hsl(236, 68%, 29%)
HSV	hsv(236, 81%, 49%)
CMYK	cmyk(81%, 75.4%, 0%, 50.6%)
CIE-LAB	lab(18.71, 33.00, -53.85)
CIE-LCH	lch(18.71, 63.16, 301.50°)
OKLab	oklab(31.3% 0.0005 -0.156)
OKLCH	oklch(31.3% 0.156 270.2)
XYZ	xyz(4.6313, 2.6800, 20.0078)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F7E #7E7718

analogous

#18527E #181F7E #44187E

triadic

#181F7E #7E181F #1F7E18

tetradic

#181F7E #7E1852 #7E7718 #187E44

square

#181F7E #7E1852 #7E7718 #187E44

split-complementary

#181F7E #7E4418 #527E18

monochromatic

#05061A #0E124B #181F7E #222CB1 #3743D9

Accessibility & contrast

On white

13.67

#181F7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#181F7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F7E

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F7E	#FFFFFF	#000000	##FFFFFF
##181F7E	1.00	13.67	1.54	13.67
#FFFFFF	13.67	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003381

Deuteranopia (green-blind)

#00287C

Tritanopia (blue-blind)

#003A4C

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #181f7e;
/* rgb */ color: rgb(24, 31, 126);
/* oklch */ color: oklch(31.3% 0.156 270.2);

Tailwind

colors: {
  custom: {
    50: '#695ba4',
    500: '#181f7e',
    950: '#000000',
  },
}

SCSS

$custom: #181f7e;
$custom-light: #695ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#181f7e",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 126
  },
  "hsl": {
    "h": 235.882,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.313,
    "c": 0.15597,
    "h": 270.2
  },
  "luminance": 0.02681
}

Semantic roles & 50–950 ramp

primary

#181F7E

secondary

#B2AB3F

accent

#DF3DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181F7E

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

Preview Lab → · Contrast checker → · Palette generator →