#1B0F72#1B0F72

#1B0F72 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.9% C 0.155 H 275.0°. Best body text is #FFFFFF at 15.46:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F72
RGB	rgb(27, 15, 114)
HSL	hsl(247, 77%, 25%)
HSV	hsv(247, 87%, 45%)
CMYK	cmyk(76.3%, 86.8%, 0%, 55.3%)
CIE-LAB	lab(14.34, 38.06, -53.38)
CIE-LCH	lch(14.34, 65.56, 305.48°)
OKLab	oklab(27.86% 0.0134 -0.1543)
OKLCH	oklch(27.86% 0.155 275)
XYZ	xyz(3.6591, 1.7892, 16.0688)
Luminance	0.0179 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F72 #66720F

analogous

#0F3472 #1B0F72 #4D0F72

triadic

#1B0F72 #721B0F #0F721B

tetradic

#1B0F72 #720F34 #66720F #0F724D

square

#1B0F72 #720F34 #66720F #0F724D

split-complementary

#1B0F72 #724D0F #34720F

monochromatic

#06041B #0E083C #1B0F72 #2816A8 #351DDE

Accessibility & contrast

On white

15.46

#1B0F72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1B0F72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F72

15.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F72	#FFFFFF	#000000	##FFFFFF
##1B0F72	1.00	15.46	1.36	15.46
#FFFFFF	15.46	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002975

Deuteranopia (green-blind)

#002070

Tritanopia (blue-blind)

#002F42

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b0f72;
/* rgb */ color: rgb(27, 15, 114);
/* oklch */ color: oklch(27.9% 0.155 275.0);

Tailwind

colors: {
  custom: {
    50: '#68519c',
    500: '#1b0f72',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f72;
$custom-light: #68519c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f72",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 114
  },
  "hsl": {
    "h": 247.273,
    "s": 76.744,
    "l": 25.294
  },
  "oklch": {
    "l": 0.27858,
    "c": 0.1549,
    "h": 275
  },
  "luminance": 0.0179
}

Semantic roles & 50–950 ramp

primary

#1B0F72

secondary

#9BAA33

accent

#F335DC

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B0F72

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

Preview Lab → · Contrast checker → · Palette generator →