#1B186F#1B186F

#1B186F is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.7% C 0.143 H 274.1°. Best body text is #FFFFFF at 14.93:1 contrast (WCAG AA passes).

Color values

HEX	#1B186F
RGB	rgb(27, 24, 111)
HSL	hsl(242, 64%, 26%)
HSV	hsv(242, 78%, 44%)
CMYK	cmyk(75.7%, 78.4%, 0%, 56.5%)
CIE-LAB	lab(15.66, 32.17, -49.24)
CIE-LCH	lch(15.66, 58.82, 303.15°)
OKLab	oklab(28.68% 0.0103 -0.1424)
OKLCH	oklch(28.68% 0.143 274.1)
XYZ	xyz(3.6469, 2.0336, 15.2362)
Luminance	0.0203 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B186F #6C6F18

analogous

#18416F #1B186F #47186F

triadic

#1B186F #6F1B18 #186F1B

tetradic

#1B186F #6F1841 #6C6F18 #186F47

square

#1B186F #6F1841 #6C6F18 #186F47

split-complementary

#1B186F #6F4718 #416F18

monochromatic

#060519 #0F0D3D #1B186F #2723A1 #352FD2

Accessibility & contrast

On white

14.93

#1B186F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1B186F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B186F

14.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B186F	#FFFFFF	#000000	##FFFFFF
##1B186F	1.00	14.93	1.41	14.93
#FFFFFF	14.93	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.93	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: #1b186f;
/* rgb */ color: rgb(27, 24, 111);
/* oklch */ color: oklch(28.7% 0.143 274.1);

Tailwind

colors: {
  custom: {
    50: '#665699',
    500: '#1b186f',
    950: '#000000',
  },
}

SCSS

$custom: #1b186f;
$custom-light: #665699;
$custom-dark: #000000;

JSON

{
  "hex": "#1b186f",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 111
  },
  "hsl": {
    "h": 242.069,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.28676,
    "c": 0.1428,
    "h": 274.1
  },
  "luminance": 0.02034
}

Semantic roles & 50–950 ramp

primary

#1B186F

secondary

#A1A53E

accent

#E740E2

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B186F

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

Preview Lab → · Contrast checker → · Palette generator →