#1B106A#1B106A

#1B106A is a dark, vivid blue. Relative luminance 0.016; OKLCH L 27.0% C 0.144 H 276.2°. Best body text is #FFFFFF at 15.80:1 contrast (WCAG AA passes).

Color values

HEX	#1B106A
RGB	rgb(27, 16, 106)
HSL	hsl(247, 74%, 24%)
HSV	hsv(247, 85%, 42%)
CMYK	cmyk(74.5%, 84.9%, 0%, 58.4%)
CIE-LAB	lab(13.50, 34.95, -49.56)
CIE-LCH	lch(13.50, 60.65, 305.19°)
OKLab	oklab(26.98% 0.0155 -0.1432)
OKLCH	oklch(26.98% 0.144 276.2)
XYZ	xyz(3.2380, 1.6439, 13.7795)
Luminance	0.0164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B106A #5F6A10

analogous

#10326A #1B106A #48106A

triadic

#1B106A #6A1B10 #106A1B

tetradic

#1B106A #6A1032 #5F6A10 #106A48

square

#1B106A #6A1032 #5F6A10 #106A48

split-complementary

#1B106A #6A4810 #326A10

monochromatic

#07041B #0D0835 #1B106A #29189F #3620D4

Accessibility & contrast

On white

15.80

#1B106A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#1B106A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B106A

15.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B106A	#FFFFFF	#000000	##FFFFFF
##1B106A	1.00	15.80	1.33	15.80
#FFFFFF	15.80	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00266C

Deuteranopia (green-blind)

#001F68

Tritanopia (blue-blind)

#002C3E

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #1b106a;
/* rgb */ color: rgb(27, 16, 106);
/* oklch */ color: oklch(27.0% 0.144 276.2);

Tailwind

colors: {
  custom: {
    50: '#665196',
    500: '#1b106a',
    950: '#000000',
  },
}

SCSS

$custom: #1b106a;
$custom-light: #665196;
$custom-dark: #000000;

JSON

{
  "hex": "#1b106a",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 106
  },
  "hsl": {
    "h": 247.333,
    "s": 73.77,
    "l": 23.922
  },
  "oklch": {
    "l": 0.26981,
    "c": 0.14408,
    "h": 276.2
  },
  "luminance": 0.01644
}

Semantic roles & 50–950 ramp

primary

#1B106A

secondary

#95A234

accent

#F037DA

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07020D

muted

#7A787E

Preview Lab

Preview with #1B106A

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

Preview Lab → · Contrast checker → · Palette generator →