#1B166A#1B166A

#1B166A is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.8% C 0.138 H 275.2°. Best body text is #FFFFFF at 15.34:1 contrast (WCAG AA passes).

Color values

HEX	#1B166A
RGB	rgb(27, 22, 106)
HSL	hsl(244, 66%, 25%)
HSV	hsv(244, 79%, 42%)
CMYK	cmyk(74.5%, 79.2%, 0%, 58.4%)
CIE-LAB	lab(14.66, 31.60, -47.63)
CIE-LCH	lch(14.66, 57.15, 303.56°)
OKLab	oklab(27.8% 0.0125 -0.1377)
OKLCH	oklch(27.8% 0.138 275.2)
XYZ	xyz(3.3396, 1.8471, 13.8134)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B166A #656A16

analogous

#163B6A #1B166A #45166A

triadic

#1B166A #6A1B16 #166A1B

tetradic

#1B166A #6A163B #656A16 #166A45

square

#1B166A #6A163B #656A16 #166A45

split-complementary

#1B166A #6A4516 #3B6A16

monochromatic

#060519 #0E0B37 #1B166A #28219D #352BCF

Accessibility & contrast

On white

15.34

#1B166A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1B166A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B166A

15.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B166A	#FFFFFF	#000000	##FFFFFF
##1B166A	1.00	15.34	1.37	15.34
#FFFFFF	15.34	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00296C

Deuteranopia (green-blind)

#002169

Tritanopia (blue-blind)

#002F3F

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b166a;
/* rgb */ color: rgb(27, 22, 106);
/* oklch */ color: oklch(27.8% 0.138 275.2);

Tailwind

colors: {
  custom: {
    50: '#655596',
    500: '#1b166a',
    950: '#000000',
  },
}

SCSS

$custom: #1b166a;
$custom-light: #655596;
$custom-dark: #000000;

JSON

{
  "hex": "#1b166a",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 106
  },
  "hsl": {
    "h": 243.571,
    "s": 65.625,
    "l": 25.098
  },
  "oklch": {
    "l": 0.27799,
    "c": 0.13827,
    "h": 275.2
  },
  "luminance": 0.01847
}

Semantic roles & 50–950 ramp

primary

#1B166A

secondary

#9AA03B

accent

#E93FDE

background

#F6F5F9

surface

#EBE8F2

border

#C6C4CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #1B166A

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

Preview Lab → · Contrast checker → · Palette generator →