#1B1BC9#1B1BC9

#1B1BC9 is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 40.0% C 0.246 H 267.7°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#1B1BC9
RGB	rgb(27, 27, 201)
HSL	hsl(240, 76%, 45%)
HSV	hsv(240, 87%, 79%)
CMYK	cmyk(86.6%, 86.6%, 0%, 21.2%)
CIE-LAB	lab(27.39, 59.44, -85.11)
CIE-LCH	lch(27.39, 103.81, 304.93°)
OKLab	oklab(40.03% -0.0097 -0.2463)
OKLCH	oklch(40.03% 0.246 267.7)
XYZ	xyz(11.3829, 5.2325, 55.6570)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1BC9 #C9C91B

analogous

#1B72C9 #1B1BC9 #721BC9

triadic

#1B1BC9 #C91B1B #1BC91B

tetradic

#1B1BC9 #C91B72 #C9C91B #1BC972

square

#1B1BC9 #C91B72 #C9C91B #1BC972

split-complementary

#1B1BC9 #C9721B #72C91B

monochromatic

#0D0D5D #141493 #1B1BC9 #3C3CE5 #7272EC

Accessibility & contrast

On white

10.26

#1B1BC9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1B1BC9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1BC9

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1BC9	#FFFFFF	#000000	##FFFFFF
##1B1BC9	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ACE

Deuteranopia (green-blind)

#0037C6

Tritanopia (blue-blind)

#005777

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b1bc9;
/* rgb */ color: rgb(27, 27, 201);
/* oklch */ color: oklch(40.0% 0.246 267.7);

Tailwind

colors: {
  custom: {
    50: '#7e5fdb',
    500: '#1b1bc9',
    950: '#000000',
  },
}

SCSS

$custom: #1b1bc9;
$custom-light: #7e5fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1bc9",
  "rgb": {
    "r": 27,
    "g": 27,
    "b": 201
  },
  "hsl": {
    "h": 240,
    "s": 76.316,
    "l": 44.706
  },
  "oklch": {
    "l": 0.40025,
    "c": 0.24649,
    "h": 267.7
  },
  "luminance": 0.05234
}

Semantic roles & 50–950 ramp

primary

#1B1BC9

secondary

#D3D36D

accent

#F335F3

background

#F8F5FD

surface

#F0EAFB

border

#CBC6D4

text

#0C0515

muted

#7D7983

Preview Lab

Preview with #1B1BC9

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

Preview Lab → · Contrast checker → · Palette generator →