#1B147A#1B147A

#1B147A is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.4% C 0.161 H 273.3°. Best body text is #FFFFFF at 14.71:1 contrast (WCAG AA passes).

Color values

HEX	#1B147A
RGB	rgb(27, 20, 122)
HSL	hsl(244, 72%, 28%)
HSV	hsv(244, 84%, 48%)
CMYK	cmyk(77.9%, 83.6%, 0%, 52.2%)
CIE-LAB	lab(16.20, 38.19, -55.46)
CIE-LCH	lch(16.20, 67.34, 304.55°)
OKLab	oklab(29.44% 0.0094 -0.1604)
OKLCH	oklch(29.44% 0.161 273.3)
XYZ	xyz(4.2138, 2.1380, 18.5992)
Luminance	0.0214 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B147A #737A14

analogous

#14407A #1B147A #4E147A

triadic

#1B147A #7A1B14 #147A1B

tetradic

#1B147A #7A1440 #737A14 #147A4E

square

#1B147A #7A1440 #737A14 #147A4E

split-complementary

#1B147A #7A4E14 #407A14

monochromatic

#06041A #0F0B45 #1B147A #271DAF #382CDC

Accessibility & contrast

On white

14.71

#1B147A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1B147A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B147A

14.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B147A	#FFFFFF	#000000	##FFFFFF
##1B147A	1.00	14.71	1.43	14.71
#FFFFFF	14.71	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7D

Deuteranopia (green-blind)

#002378

Tritanopia (blue-blind)

#003448

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b147a;
/* rgb */ color: rgb(27, 20, 122);
/* oklch */ color: oklch(29.4% 0.161 273.3);

Tailwind

colors: {
  custom: {
    50: '#6a55a2',
    500: '#1b147a',
    950: '#000000',
  },
}

SCSS

$custom: #1b147a;
$custom-light: #6a55a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b147a",
  "rgb": {
    "r": 27,
    "g": 20,
    "b": 122
  },
  "hsl": {
    "h": 244.118,
    "s": 71.831,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29435,
    "c": 0.16071,
    "h": 273.3
  },
  "luminance": 0.02138
}

Semantic roles & 50–950 ramp

primary

#1B147A

secondary

#A8B03A

accent

#EF39E2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1B147A

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

Preview Lab → · Contrast checker → · Palette generator →