#1B1576#1B1576

#1B1576 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.1% C 0.155 H 273.7°. Best body text is #FFFFFF at 14.84:1 contrast (WCAG AA passes).

Color values

HEX	#1B1576
RGB	rgb(27, 21, 118)
HSL	hsl(244, 70%, 27%)
HSV	hsv(244, 82%, 46%)
CMYK	cmyk(77.1%, 82.2%, 0%, 53.7%)
CIE-LAB	lab(15.89, 36.32, -53.40)
CIE-LCH	lch(15.89, 64.59, 304.22°)
OKLab	oklab(29.08% 0.01 -0.1545)
OKLCH	oklch(29.08% 0.155 273.7)
XYZ	xyz(3.9891, 2.0769, 17.3267)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1576 #707615

analogous

#154076 #1B1576 #4B1576

triadic

#1B1576 #761B15 #15761B

tetradic

#1B1576 #761540 #707615 #15764B

square

#1B1576 #761540 #707615 #15764B

split-complementary

#1B1576 #764B15 #407615

monochromatic

#06051A #0F0C42 #1B1576 #271EAA #372CD9

Accessibility & contrast

On white

14.84

#1B1576 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1B1576 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1576

14.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1576	#FFFFFF	#000000	##FFFFFF
##1B1576	1.00	14.84	1.42	14.84
#FFFFFF	14.84	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C79

Deuteranopia (green-blind)

#002374

Tritanopia (blue-blind)

#003345

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b1576;
/* rgb */ color: rgb(27, 21, 118);
/* oklch */ color: oklch(29.1% 0.155 273.7);

Tailwind

colors: {
  custom: {
    50: '#69559f',
    500: '#1b1576',
    950: '#000000',
  },
}

SCSS

$custom: #1b1576;
$custom-light: #69559f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1576",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 118
  },
  "hsl": {
    "h": 243.711,
    "s": 69.784,
    "l": 27.255
  },
  "oklch": {
    "l": 0.29076,
    "c": 0.15481,
    "h": 273.7
  },
  "luminance": 0.02077
}

Semantic roles & 50–950 ramp

primary

#1B1576

secondary

#A5AC3B

accent

#ED3BE2

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #1B1576

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

Preview Lab → · Contrast checker → · Palette generator →