#1B1073#1B1073

#1B1073 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 28.1% C 0.155 H 274.7°. Best body text is #FFFFFF at 15.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B1073
RGB	rgb(27, 16, 115)
HSL	hsl(247, 76%, 26%)
HSV	hsv(247, 86%, 45%)
CMYK	cmyk(76.5%, 86.1%, 0%, 54.9%)
CIE-LAB	lab(14.63, 37.90, -53.55)
CIE-LCH	lch(14.63, 65.60, 305.29°)
OKLab	oklab(28.1% 0.0127 -0.1548)
OKLCH	oklch(28.1% 0.155 274.7)
XYZ	xyz(3.7308, 1.8410, 16.3751)
Luminance	0.0184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1073 #687310

analogous

#103673 #1B1073 #4C1073

triadic

#1B1073 #731B10 #10731B

tetradic

#1B1073 #731036 #687310 #10734C

square

#1B1073 #731036 #687310 #10734C

split-complementary

#1B1073 #734C10 #367310

monochromatic

#06041B #0E093D #1B1073 #2817A9 #341FDE

Accessibility & contrast

On white

15.35

#1B1073 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1B1073 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1073

15.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1073	#FFFFFF	#000000	##FFFFFF
##1B1073	1.00	15.35	1.37	15.35
#FFFFFF	15.35	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002976

Deuteranopia (green-blind)

#002071

Tritanopia (blue-blind)

#003043

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b1073;
/* rgb */ color: rgb(27, 16, 115);
/* oklch */ color: oklch(28.1% 0.155 274.7);

Tailwind

colors: {
  custom: {
    50: '#68529c',
    500: '#1b1073',
    950: '#000000',
  },
}

SCSS

$custom: #1b1073;
$custom-light: #68529c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1073",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 115
  },
  "hsl": {
    "h": 246.667,
    "s": 75.573,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28095,
    "c": 0.15535,
    "h": 274.7
  },
  "luminance": 0.01841
}

Semantic roles & 50–950 ramp

primary

#1B1073

secondary

#9DAA34

accent

#F236DD

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B1073

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

Preview Lab → · Contrast checker → · Palette generator →