#1B19CA#1B19CA

#1B19CA is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 40.0% C 0.249 H 267.7°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#1B19CA
RGB	rgb(27, 25, 202)
HSL	hsl(241, 78%, 45%)
HSV	hsv(241, 88%, 79%)
CMYK	cmyk(86.6%, 87.6%, 0%, 20.8%)
CIE-LAB	lab(27.27, 60.47, -85.88)
CIE-LCH	lch(27.27, 105.04, 305.15°)
OKLab	oklab(39.98% -0.0098 -0.2485)
OKLCH	oklch(39.98% 0.249 267.7)
XYZ	xyz(11.4566, 5.1911, 56.2638)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B19CA #C8CA19

analogous

#1970CA #1B19CA #7419CA

triadic

#1B19CA #CA1B19 #19CA1B

tetradic

#1B19CA #CA1970 #C8CA19 #19CA74

square

#1B19CA #CA1970 #C8CA19 #19CA74

split-complementary

#1B19CA #CA7419 #70CA19

monochromatic

#0C0C5D #141294 #1B19CA #3C3AE7 #7270ED

Accessibility & contrast

On white

10.30

#1B19CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1B19CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B19CA

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B19CA	#FFFFFF	#000000	##FFFFFF
##1B19CA	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049CF

Deuteranopia (green-blind)

#0037C7

Tritanopia (blue-blind)

#005778

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b19ca;
/* rgb */ color: rgb(27, 25, 202);
/* oklch */ color: oklch(40.0% 0.249 267.7);

Tailwind

colors: {
  custom: {
    50: '#7f5edc',
    500: '#1b19ca',
    950: '#000000',
  },
}

SCSS

$custom: #1b19ca;
$custom-light: #7f5edc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b19ca",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 202
  },
  "hsl": {
    "h": 240.678,
    "s": 77.974,
    "l": 44.51
  },
  "oklch": {
    "l": 0.39983,
    "c": 0.24868,
    "h": 267.7
  },
  "luminance": 0.05193
}

Semantic roles & 50–950 ramp

primary

#1B19CA

secondary

#D2D46B

accent

#F433F2

background

#F8F5FD

surface

#F0EAFB

border

#CBC6D4

text

#0D0515

muted

#7D7983

Preview Lab

Preview with #1B19CA

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

Preview Lab → · Contrast checker → · Palette generator →