#1B1977#1B1977

#1B1977 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.7% C 0.152 H 273.0°. Best body text is #FFFFFF at 14.46:1 contrast (WCAG AA passes).

Color values

HEX	#1B1977
RGB	rgb(27, 25, 119)
HSL	hsl(241, 65%, 28%)
HSV	hsv(241, 79%, 47%)
CMYK	cmyk(77.3%, 79%, 0%, 53.3%)
CIE-LAB	lab(16.80, 34.40, -52.54)
CIE-LCH	lch(16.80, 62.80, 303.21°)
OKLab	oklab(29.75% 0.0081 -0.152)
OKLCH	oklch(29.75% 0.152 273)
XYZ	xyz(4.1283, 2.2598, 17.6678)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1977 #757719

analogous

#194677 #1B1977 #4A1977

triadic

#1B1977 #771B19 #19771B

tetradic

#1B1977 #771946 #757719 #19774A

square

#1B1977 #771946 #757719 #19774A

split-complementary

#1B1977 #774A19 #467719

monochromatic

#060519 #100E44 #1B1977 #2624AA #3936D5

Accessibility & contrast

On white

14.46

#1B1977 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1B1977 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1977

14.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1977	#FFFFFF	#000000	##FFFFFF
##1B1977	1.00	14.46	1.45	14.46
#FFFFFF	14.46	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7A

Deuteranopia (green-blind)

#002575

Tritanopia (blue-blind)

#003547

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b1977;
/* rgb */ color: rgb(27, 25, 119);
/* oklch */ color: oklch(29.7% 0.152 273.0);

Tailwind

colors: {
  custom: {
    50: '#68579f',
    500: '#1b1977',
    950: '#000000',
  },
}

SCSS

$custom: #1b1977;
$custom-light: #68579f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1977",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 119
  },
  "hsl": {
    "h": 241.277,
    "s": 65.278,
    "l": 28.235
  },
  "oklch": {
    "l": 0.29749,
    "c": 0.15225,
    "h": 273
  },
  "luminance": 0.0226
}

Semantic roles & 50–950 ramp

primary

#1B1977

secondary

#A9AC40

accent

#E840E5

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #1B1977

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

Preview Lab → · Contrast checker → · Palette generator →