#1B166D#1B166D

#1B166D is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.1% C 0.142 H 274.8°. Best body text is #FFFFFF at 15.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B166D
RGB	rgb(27, 22, 109)
HSL	hsl(243, 66%, 26%)
HSV	hsv(243, 80%, 43%)
CMYK	cmyk(75.2%, 79.8%, 0%, 57.3%)
CIE-LAB	lab(15.01, 32.65, -49.02)
CIE-LCH	lch(15.01, 58.90, 303.67°)
OKLab	oklab(28.15% 0.0118 -0.1417)
OKLCH	oklch(28.15% 0.142 274.8)
XYZ	xyz(3.4983, 1.9106, 14.6495)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B166D #686D16

analogous

#163C6D #1B166D #46166D

triadic

#1B166D #6D1B16 #166D1B

tetradic

#1B166D #6D163C #686D16 #166D46

square

#1B166D #6D163C #686D16 #166D46

split-complementary

#1B166D #6D4616 #3C6D16

monochromatic

#060519 #0E0C3A #1B166D #2820A0 #342BD3

Accessibility & contrast

On white

15.19

#1B166D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1B166D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B166D

15.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B166D	#FFFFFF	#000000	##FFFFFF
##1B166D	1.00	15.19	1.38	15.19
#FFFFFF	15.19	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6F

Deuteranopia (green-blind)

#00226B

Tritanopia (blue-blind)

#003041

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b166d;
/* rgb */ color: rgb(27, 22, 109);
/* oklch */ color: oklch(28.1% 0.142 274.8);

Tailwind

colors: {
  custom: {
    50: '#665598',
    500: '#1b166d',
    950: '#000000',
  },
}

SCSS

$custom: #1b166d;
$custom-light: #665598;
$custom-dark: #000000;

JSON

{
  "hex": "#1b166d",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 109
  },
  "hsl": {
    "h": 243.448,
    "s": 66.412,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28147,
    "c": 0.14224,
    "h": 274.8
  },
  "luminance": 0.01911
}

Semantic roles & 50–950 ramp

primary

#1B166D

secondary

#9DA33C

accent

#E93EE0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B166D

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

Preview Lab → · Contrast checker → · Palette generator →