#1B1673#1B1673

#1B1673 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.9% C 0.150 H 274.0°. Best body text is #FFFFFF at 14.90:1 contrast (WCAG AA passes).

Color values

HEX	#1B1673
RGB	rgb(27, 22, 115)
HSL	hsl(243, 68%, 27%)
HSV	hsv(243, 81%, 45%)
CMYK	cmyk(76.5%, 80.9%, 0%, 54.9%)
CIE-LAB	lab(15.72, 34.74, -51.75)
CIE-LCH	lch(15.72, 62.33, 303.88°)
OKLab	oklab(28.85% 0.0103 -0.1497)
OKLCH	oklch(28.85% 0.15 274)
XYZ	xyz(3.8324, 2.0442, 16.4089)
Luminance	0.0204 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1673 #6E7316

analogous

#164073 #1B1673 #4A1673

triadic

#1B1673 #731B16 #16731B

tetradic

#1B1673 #731640 #6E7316 #16734A

square

#1B1673 #731640 #6E7316 #16734A

split-complementary

#1B1673 #734A16 #407316

monochromatic

#06051A #0F0C40 #1B1673 #2720A6 #362DD7

Accessibility & contrast

On white

14.90

#1B1673 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1B1673 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1673

14.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1673	#FFFFFF	#000000	##FFFFFF
##1B1673	1.00	14.90	1.41	14.90
#FFFFFF	14.90	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B76

Deuteranopia (green-blind)

#002371

Tritanopia (blue-blind)

#003244

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1b1673;
/* rgb */ color: rgb(27, 22, 115);
/* oklch */ color: oklch(28.9% 0.150 274.0);

Tailwind

colors: {
  custom: {
    50: '#68559c',
    500: '#1b1673',
    950: '#000000',
  },
}

SCSS

$custom: #1b1673;
$custom-light: #68559c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1673",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 115
  },
  "hsl": {
    "h": 243.226,
    "s": 67.883,
    "l": 26.863
  },
  "oklch": {
    "l": 0.28853,
    "c": 0.15005,
    "h": 274
  },
  "luminance": 0.02045
}

Semantic roles & 50–950 ramp

primary

#1B1673

secondary

#A3A93C

accent

#EB3DE1

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B1673

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

Preview Lab → · Contrast checker → · Palette generator →