#1B186A#1B186A

#1B186A is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.1% C 0.136 H 274.8°. Best body text is #FFFFFF at 15.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B186A
RGB	rgb(27, 24, 106)
HSL	hsl(242, 63%, 25%)
HSV	hsv(242, 77%, 42%)
CMYK	cmyk(74.5%, 77.4%, 0%, 58.4%)
CIE-LAB	lab(15.10, 30.37, -46.91)
CIE-LCH	lch(15.10, 55.88, 302.92°)
OKLab	oklab(28.11% 0.0113 -0.1356)
OKLCH	oklch(28.11% 0.136 274.8)
XYZ	xyz(3.3793, 1.9266, 13.8266)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B186A #676A18

analogous

#183E6A #1B186A #44186A

triadic

#1B186A #6A1B18 #186A1B

tetradic

#1B186A #6A183E #676A18 #186A44

square

#1B186A #6A183E #676A18 #186A44

split-complementary

#1B186A #6A4418 #3E6A18

monochromatic

#060619 #0E0D38 #1B186A #28239C #342FCE

Accessibility & contrast

On white

15.16

#1B186A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1B186A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B186A

15.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B186A	#FFFFFF	#000000	##FFFFFF
##1B186A	1.00	15.16	1.39	15.16
#FFFFFF	15.16	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6C

Deuteranopia (green-blind)

#002269

Tritanopia (blue-blind)

#002F3F

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b186a;
/* rgb */ color: rgb(27, 24, 106);
/* oklch */ color: oklch(28.1% 0.136 274.8);

Tailwind

colors: {
  custom: {
    50: '#655696',
    500: '#1b186a',
    950: '#000000',
  },
}

SCSS

$custom: #1b186a;
$custom-light: #655696;
$custom-dark: #000000;

JSON

{
  "hex": "#1b186a",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 106
  },
  "hsl": {
    "h": 242.195,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28106,
    "c": 0.13611,
    "h": 274.8
  },
  "luminance": 0.01927
}

Semantic roles & 50–950 ramp

primary

#1B186A

secondary

#9CA03E

accent

#E642E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #1B186A

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

Preview Lab → · Contrast checker → · Palette generator →