#1B1979#1B1979

#1B1979 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.0% C 0.155 H 272.8°. Best body text is #FFFFFF at 14.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B1979
RGB	rgb(27, 25, 121)
HSL	hsl(241, 66%, 29%)
HSV	hsv(241, 79%, 47%)
CMYK	cmyk(77.7%, 79.3%, 0%, 52.5%)
CIE-LAB	lab(17.03, 35.10, -53.44)
CIE-LCH	lch(17.03, 63.94, 303.30°)
OKLab	oklab(29.98% 0.0076 -0.1546)
OKLCH	oklch(29.98% 0.155 272.8)
XYZ	xyz(4.2497, 2.3083, 18.3070)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1979 #777919

analogous

#194779 #1B1979 #4B1979

triadic

#1B1979 #791B19 #19791B

tetradic

#1B1979 #791947 #777919 #19794B

square

#1B1979 #791947 #777919 #19794B

split-complementary

#1B1979 #794B19 #477919

monochromatic

#060519 #100F46 #1B1979 #2623AC #3A37D6

Accessibility & contrast

On white

14.37

#1B1979 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1B1979 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1979

14.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1979	#FFFFFF	#000000	##FFFFFF
##1B1979	1.00	14.37	1.46	14.37
#FFFFFF	14.37	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7C

Deuteranopia (green-blind)

#002577

Tritanopia (blue-blind)

#003648

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1b1979;
/* rgb */ color: rgb(27, 25, 121);
/* oklch */ color: oklch(30.0% 0.155 272.8);

Tailwind

colors: {
  custom: {
    50: '#6957a1',
    500: '#1b1979',
    950: '#000000',
  },
}

SCSS

$custom: #1b1979;
$custom-light: #6957a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1979",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 121
  },
  "hsl": {
    "h": 241.25,
    "s": 65.753,
    "l": 28.627
  },
  "oklch": {
    "l": 0.29983,
    "c": 0.15484,
    "h": 272.8
  },
  "luminance": 0.02309
}

Semantic roles & 50–950 ramp

primary

#1B1979

secondary

#ABAE40

accent

#E93FE5

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #1B1979

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

Preview Lab → · Contrast checker → · Palette generator →