#1B0F66#1B0F66

#1B0F66 is a dark, vivid blue. Relative luminance 0.015; OKLCH L 26.4% C 0.140 H 277.1°. Best body text is #FFFFFF at 16.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F66
RGB	rgb(27, 15, 102)
HSL	hsl(248, 74%, 23%)
HSV	hsv(248, 85%, 40%)
CMYK	cmyk(73.5%, 85.3%, 0%, 60%)
CIE-LAB	lab(12.82, 34.14, -48.04)
CIE-LCH	lch(12.82, 58.94, 305.40°)
OKLab	oklab(26.37% 0.0172 -0.1388)
OKLCH	oklch(26.37% 0.14 277.1)
XYZ	xyz(3.0203, 1.5337, 12.7047)
Luminance	0.0153 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F66 #5A660F

analogous

#0F2E66 #1B0F66 #460F66

triadic

#1B0F66 #661B0F #0F661B

tetradic

#1B0F66 #660F2E #5A660F #0F6646

square

#1B0F66 #660F2E #5A660F #0F6646

split-complementary

#1B0F66 #66460F #2E660F

monochromatic

#07041B #0D0731 #1B0F66 #29179B #371FD1

Accessibility & contrast

On white

16.07

#1B0F66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#1B0F66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F66

16.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F66	#FFFFFF	#000000	##FFFFFF
##1B0F66	1.00	16.07	1.31	16.07
#FFFFFF	16.07	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002568

Deuteranopia (green-blind)

#001D65

Tritanopia (blue-blind)

#002A3B

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #1b0f66;
/* rgb */ color: rgb(27, 15, 102);
/* oklch */ color: oklch(26.4% 0.140 277.1);

Tailwind

colors: {
  custom: {
    50: '#655093',
    500: '#1b0f66',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f66;
$custom-light: #655093;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f66",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 102
  },
  "hsl": {
    "h": 248.276,
    "s": 74.359,
    "l": 22.941
  },
  "oklch": {
    "l": 0.26368,
    "c": 0.13988,
    "h": 277.1
  },
  "luminance": 0.01534
}

Semantic roles & 50–950 ramp

primary

#1B0F66

secondary

#909F32

accent

#F137D7

background

#F6F4F9

surface

#EBE7F1

border

#C6C3CB

text

#06020D

muted

#7A787E

Preview Lab

Preview with #1B0F66

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

Preview Lab → · Contrast checker → · Palette generator →