#1D186F#1D186F

#1D186F is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.8% C 0.142 H 275.3°. Best body text is #FFFFFF at 14.87:1 contrast (WCAG AA passes).

Color values

HEX	#1D186F
RGB	rgb(29, 24, 111)
HSL	hsl(243, 64%, 26%)
HSV	hsv(243, 78%, 44%)
CMYK	cmyk(73.9%, 78.4%, 0%, 56.5%)
CIE-LAB	lab(15.81, 32.38, -49.00)
CIE-LCH	lch(15.81, 58.73, 303.46°)
OKLab	oklab(28.82% 0.013 -0.1417)
OKLCH	oklch(28.82% 0.142 275.3)
XYZ	xyz(3.7016, 2.0618, 15.2387)
Luminance	0.0206 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D186F #6A6F18

analogous

#183F6F #1D186F #49186F

triadic

#1D186F #6F1D18 #186F1D

tetradic

#1D186F #6F183F #6A6F18 #186F49

square

#1D186F #6F183F #6A6F18 #186F49

split-complementary

#1D186F #6F4918 #3F6F18

monochromatic

#070519 #100D3D #1D186F #2A23A1 #392FD2

Accessibility & contrast

On white

14.87

#1D186F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1D186F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D186F

14.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D186F	#FFFFFF	#000000	##FFFFFF
##1D186F	1.00	14.87	1.41	14.87
#FFFFFF	14.87	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B72

Deuteranopia (green-blind)

#00236D

Tritanopia (blue-blind)

#003142

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1d186f;
/* rgb */ color: rgb(29, 24, 111);
/* oklch */ color: oklch(28.8% 0.142 275.3);

Tailwind

colors: {
  custom: {
    50: '#675699',
    500: '#1d186f',
    950: '#000000',
  },
}

SCSS

$custom: #1d186f;
$custom-light: #675699;
$custom-dark: #000000;

JSON

{
  "hex": "#1d186f",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 111
  },
  "hsl": {
    "h": 243.448,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.28817,
    "c": 0.14227,
    "h": 275.3
  },
  "luminance": 0.02062
}

Semantic roles & 50–950 ramp

primary

#1D186F

secondary

#9FA53E

accent

#E740DE

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1D186F

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

Preview Lab → · Contrast checker → · Palette generator →