#1B1072#1B1072

#1B1072 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 28.0% C 0.154 H 274.9°. Best body text is #FFFFFF at 15.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B1072
RGB	rgb(27, 16, 114)
HSL	hsl(247, 75%, 25%)
HSV	hsv(247, 86%, 45%)
CMYK	cmyk(76.3%, 86%, 0%, 55.3%)
CIE-LAB	lab(14.50, 37.58, -53.11)
CIE-LCH	lch(14.50, 65.06, 305.28°)
OKLab	oklab(27.97% 0.0131 -0.1536)
OKLCH	oklch(27.97% 0.154 274.9)
XYZ	xyz(3.6735, 1.8181, 16.0737)
Luminance	0.0182 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1072 #677210

analogous

#103672 #1B1072 #4C1072

triadic

#1B1072 #721B10 #10721B

tetradic

#1B1072 #721036 #677210 #10724C

square

#1B1072 #721036 #677210 #10724C

split-complementary

#1B1072 #724C10 #367210

monochromatic

#06041B #0E083C #1B1072 #2818A8 #341FDD

Accessibility & contrast

On white

15.40

#1B1072 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1B1072 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1072

15.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1072	#FFFFFF	#000000	##FFFFFF
##1B1072	1.00	15.40	1.36	15.40
#FFFFFF	15.40	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002975

Deuteranopia (green-blind)

#002070

Tritanopia (blue-blind)

#002F42

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b1072;
/* rgb */ color: rgb(27, 16, 114);
/* oklch */ color: oklch(28.0% 0.154 274.9);

Tailwind

colors: {
  custom: {
    50: '#68529c',
    500: '#1b1072',
    950: '#000000',
  },
}

SCSS

$custom: #1b1072;
$custom-light: #68529c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1072",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 114
  },
  "hsl": {
    "h": 246.735,
    "s": 75.385,
    "l": 25.49
  },
  "oklch": {
    "l": 0.27971,
    "c": 0.15411,
    "h": 274.9
  },
  "luminance": 0.01818
}

Semantic roles & 50–950 ramp

primary

#1B1072

secondary

#9CA934

accent

#F236DD

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B1072

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

Preview Lab → · Contrast checker → · Palette generator →