#1B1572#1B1572

#1B1572 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.6% C 0.150 H 274.2°. Best body text is #FFFFFF at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#1B1572
RGB	rgb(27, 21, 114)
HSL	hsl(244, 69%, 26%)
HSV	hsv(244, 82%, 45%)
CMYK	cmyk(76.3%, 81.6%, 0%, 55.3%)
CIE-LAB	lab(15.40, 34.96, -51.62)
CIE-LCH	lch(15.40, 62.34, 304.11°)
OKLab	oklab(28.6% 0.011 -0.1493)
OKLCH	oklch(28.6% 0.15 274.2)
XYZ	xyz(3.7564, 1.9839, 16.1013)
Luminance	0.0198 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1572 #6C7215

analogous

#153E72 #1B1572 #4A1572

triadic

#1B1572 #721B15 #15721B

tetradic

#1B1572 #72153E #6C7215 #15724A

square

#1B1572 #72153E #6C7215 #15724A

split-complementary

#1B1572 #724A15 #3E7215

monochromatic

#06051A #0F0B3E #1B1572 #271FA6 #352AD8

Accessibility & contrast

On white

15.03

#1B1572 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1B1572 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1572

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1572	#FFFFFF	#000000	##FFFFFF
##1B1572	1.00	15.03	1.40	15.03
#FFFFFF	15.03	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B75

Deuteranopia (green-blind)

#002270

Tritanopia (blue-blind)

#003143

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1b1572;
/* rgb */ color: rgb(27, 21, 114);
/* oklch */ color: oklch(28.6% 0.150 274.2);

Tailwind

colors: {
  custom: {
    50: '#68559c',
    500: '#1b1572',
    950: '#000000',
  },
}

SCSS

$custom: #1b1572;
$custom-light: #68559c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1572",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 114
  },
  "hsl": {
    "h": 243.871,
    "s": 68.889,
    "l": 26.471
  },
  "oklch": {
    "l": 0.28596,
    "c": 0.14972,
    "h": 274.2
  },
  "luminance": 0.01984
}

Semantic roles & 50–950 ramp

primary

#1B1572

secondary

#A1A83B

accent

#EC3CE0

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B1572

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

Preview Lab → · Contrast checker → · Palette generator →