#1B157A#1B157A

#1B157A is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.6% C 0.160 H 273.2°. Best body text is #FFFFFF at 14.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B157A
RGB	rgb(27, 21, 122)
HSL	hsl(244, 71%, 28%)
HSV	hsv(244, 83%, 48%)
CMYK	cmyk(77.9%, 82.8%, 0%, 52.2%)
CIE-LAB	lab(16.38, 37.67, -55.16)
CIE-LCH	lch(16.38, 66.80, 304.33°)
OKLab	oklab(29.56% 0.009 -0.1596)
OKLCH	oklch(29.56% 0.16 273.2)
XYZ	xyz(4.2318, 2.1740, 18.6052)
Luminance	0.0217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B157A #747A15

analogous

#15427A #1B157A #4D157A

triadic

#1B157A #7A1B15 #157A1B

tetradic

#1B157A #7A1542 #747A15 #157A4D

square

#1B157A #7A1542 #747A15 #157A4D

split-complementary

#1B157A #7A4D15 #427A15

monochromatic

#06041A #0F0C46 #1B157A #271EAE #392EDB

Accessibility & contrast

On white

14.64

#1B157A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1B157A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B157A

14.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B157A	#FFFFFF	#000000	##FFFFFF
##1B157A	1.00	14.64	1.43	14.64
#FFFFFF	14.64	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7D

Deuteranopia (green-blind)

#002478

Tritanopia (blue-blind)

#003448

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b157a;
/* rgb */ color: rgb(27, 21, 122);
/* oklch */ color: oklch(29.6% 0.160 273.2);

Tailwind

colors: {
  custom: {
    50: '#6a55a2',
    500: '#1b157a',
    950: '#000000',
  },
}

SCSS

$custom: #1b157a;
$custom-light: #6a55a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b157a",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 122
  },
  "hsl": {
    "h": 243.564,
    "s": 70.629,
    "l": 28.039
  },
  "oklch": {
    "l": 0.2956,
    "c": 0.15985,
    "h": 273.2
  },
  "luminance": 0.02174
}

Semantic roles & 50–950 ramp

primary

#1B157A

secondary

#A9AF3B

accent

#ED3AE3

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1B157A

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

Preview Lab → · Contrast checker → · Palette generator →