#1B1679#1B1679

#1B1679 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.6% C 0.158 H 273.2°. Best body text is #FFFFFF at 14.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B1679
RGB	rgb(27, 22, 121)
HSL	hsl(243, 69%, 28%)
HSV	hsv(243, 82%, 47%)
CMYK	cmyk(77.7%, 81.8%, 0%, 52.5%)
CIE-LAB	lab(16.44, 36.79, -54.42)
CIE-LCH	lch(16.44, 65.69, 304.06°)
OKLab	oklab(29.57% 0.0089 -0.1574)
OKLCH	oklch(29.57% 0.158 273.2)
XYZ	xyz(4.1889, 2.1869, 18.2868)
Luminance	0.0219 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1679 #747916

analogous

#164279 #1B1679 #4C1679

triadic

#1B1679 #791B16 #16791B

tetradic

#1B1679 #791642 #747916 #16794C

square

#1B1679 #791642 #747916 #16794C

split-complementary

#1B1679 #794C16 #427916

monochromatic

#06051A #0F0D45 #1B1679 #271FAD #3930D9

Accessibility & contrast

On white

14.61

#1B1679 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1B1679 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1679

14.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1679	#FFFFFF	#000000	##FFFFFF
##1B1679	1.00	14.61	1.44	14.61
#FFFFFF	14.61	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7C

Deuteranopia (green-blind)

#002477

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b1679;
/* rgb */ color: rgb(27, 22, 121);
/* oklch */ color: oklch(29.6% 0.158 273.2);

Tailwind

colors: {
  custom: {
    50: '#6956a1',
    500: '#1b1679',
    950: '#000000',
  },
}

SCSS

$custom: #1b1679;
$custom-light: #6956a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1679",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 121
  },
  "hsl": {
    "h": 243.03,
    "s": 69.231,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29569,
    "c": 0.1577,
    "h": 273.2
  },
  "luminance": 0.02187
}

Semantic roles & 50–950 ramp

primary

#1B1679

secondary

#A9AE3D

accent

#EC3CE3

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #1B1679

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

Preview Lab → · Contrast checker → · Palette generator →