#1B109D#1B109D

#1B109D is a dark, highly saturated blue. Relative luminance 0.030; OKLCH L 33.5% C 0.205 H 270.2°. Best body text is #FFFFFF at 13.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B109D
RGB	rgb(27, 16, 157)
HSL	hsl(245, 82%, 34%)
HSV	hsv(245, 90%, 62%)
CMYK	cmyk(82.8%, 89.8%, 0%, 38.4%)
CIE-LAB	lab(20.19, 50.76, -70.74)
CIE-LCH	lch(20.19, 87.07, 305.66°)
OKLab	oklab(33.48% 0.0009 -0.2046)
OKLCH	oklch(33.48% 0.205 270.2)
XYZ	xyz(6.7210, 3.0371, 32.1237)
Luminance	0.0304 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B109D #929D10

analogous

#104C9D #1B109D #62109D

triadic

#1B109D #9D1B10 #109D1B

tetradic

#1B109D #9D104C #929D10 #109D62

square

#1B109D #9D104C #929D10 #109D62

split-complementary

#1B109D #9D6210 #4C9D10

monochromatic

#08052E #110A65 #1B109D #2516D5 #4A3CEB

Accessibility & contrast

On white

13.06

#1B109D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1B109D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B109D

13.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B109D	#FFFFFF	#000000	##FFFFFF
##1B109D	1.00	13.06	1.61	13.06
#FFFFFF	13.06	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0037A1

Deuteranopia (green-blind)

#00299B

Tritanopia (blue-blind)

#00425C

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b109d;
/* rgb */ color: rgb(27, 16, 157);
/* oklch */ color: oklch(33.5% 0.205 270.2);

Tailwind

colors: {
  custom: {
    50: '#7356bb',
    500: '#1b109d',
    950: '#000000',
  },
}

SCSS

$custom: #1b109d;
$custom-light: #7356bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b109d",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 157
  },
  "hsl": {
    "h": 244.681,
    "s": 81.503,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3348,
    "c": 0.20457,
    "h": 270.2
  },
  "luminance": 0.03038
}

Semantic roles & 50–950 ramp

primary

#1B109D

secondary

#BFCA3E

accent

#F830E8

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0312

muted

#7C7881

Preview Lab

Preview with #1B109D

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

Preview Lab → · Contrast checker → · Palette generator →