#1B107D#1B107D

#1B107D is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.4% C 0.168 H 273.3°. Best body text is #FFFFFF at 14.82:1 contrast (WCAG AA passes).

Color values

HEX	#1B107D
RGB	rgb(27, 16, 125)
HSL	hsl(246, 77%, 28%)
HSV	hsv(246, 87%, 49%)
CMYK	cmyk(78.4%, 87.2%, 0%, 51%)
CIE-LAB	lab(15.92, 41.09, -57.84)
CIE-LCH	lch(15.92, 70.95, 305.39°)
OKLab	oklab(29.36% 0.0098 -0.1672)
OKLCH	oklch(29.36% 0.168 273.3)
XYZ	xyz(4.3377, 2.0838, 19.5717)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B107D #727D10

analogous

#103B7D #1B107D #51107D

triadic

#1B107D #7D1B10 #107D1B

tetradic

#1B107D #7D103B #727D10 #107D51

square

#1B107D #7D103B #727D10 #107D51

split-complementary

#1B107D #7D5110 #3B7D10

monochromatic

#06031B #0F0947 #1B107D #2717B3 #3824E3

Accessibility & contrast

On white

14.82

#1B107D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1B107D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B107D

14.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B107D	#FFFFFF	#000000	##FFFFFF
##1B107D	1.00	14.82	1.42	14.82
#FFFFFF	14.82	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C80

Deuteranopia (green-blind)

#00227B

Tritanopia (blue-blind)

#003449

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b107d;
/* rgb */ color: rgb(27, 16, 125);
/* oklch */ color: oklch(29.4% 0.168 273.3);

Tailwind

colors: {
  custom: {
    50: '#6b53a4',
    500: '#1b107d',
    950: '#000000',
  },
}

SCSS

$custom: #1b107d;
$custom-light: #6b53a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b107d",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 125
  },
  "hsl": {
    "h": 246.055,
    "s": 77.305,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29356,
    "c": 0.16753,
    "h": 273.3
  },
  "luminance": 0.02084
}

Semantic roles & 50–950 ramp

primary

#1B107D

secondary

#A7B335

accent

#F434E0

background

#F7F4FA

surface

#EDE7F4

border

#C8C3CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1B107D

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

Preview Lab → · Contrast checker → · Palette generator →