#1B1776#1B1776

#1B1776 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.3% C 0.153 H 273.4°. Best body text is #FFFFFF at 14.68:1 contrast (WCAG AA passes).

Color values

HEX	#1B1776
RGB	rgb(27, 23, 118)
HSL	hsl(243, 67%, 28%)
HSV	hsv(243, 81%, 46%)
CMYK	cmyk(77.1%, 80.5%, 0%, 53.7%)
CIE-LAB	lab(16.27, 35.21, -52.76)
CIE-LCH	lch(16.27, 63.43, 303.71°)
OKLab	oklab(29.35% 0.0092 -0.1527)
OKLCH	oklch(29.35% 0.153 273.4)
XYZ	xyz(4.0273, 2.1534, 17.3394)
Luminance	0.0215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1776 #727617

analogous

#174376 #1B1776 #4A1776

triadic

#1B1776 #761B17 #17761B

tetradic

#1B1776 #761743 #727617 #17764A

square

#1B1776 #761743 #727617 #17764A

split-complementary

#1B1776 #764A17 #437617

monochromatic

#06051A #0F0D43 #1B1776 #2721A9 #3831D7

Accessibility & contrast

On white

14.68

#1B1776 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1B1776 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1776

14.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1776	#FFFFFF	#000000	##FFFFFF
##1B1776	1.00	14.68	1.43	14.68
#FFFFFF	14.68	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D79

Deuteranopia (green-blind)

#002474

Tritanopia (blue-blind)

#003446

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b1776;
/* rgb */ color: rgb(27, 23, 118);
/* oklch */ color: oklch(29.3% 0.153 273.4);

Tailwind

colors: {
  custom: {
    50: '#68569f',
    500: '#1b1776',
    950: '#000000',
  },
}

SCSS

$custom: #1b1776;
$custom-light: #68569f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1776",
  "rgb": {
    "r": 27,
    "g": 23,
    "b": 118
  },
  "hsl": {
    "h": 242.526,
    "s": 67.376,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29347,
    "c": 0.15294,
    "h": 273.4
  },
  "luminance": 0.02154
}

Semantic roles & 50–950 ramp

primary

#1B1776

secondary

#A7AB3E

accent

#EA3EE3

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #1B1776

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

Preview Lab → · Contrast checker → · Palette generator →