#1B187A#1B187A

#1B187A is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.0% C 0.157 H 272.9°. Best body text is #FFFFFF at 14.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B187A
RGB	rgb(27, 24, 122)
HSL	hsl(242, 67%, 29%)
HSV	hsv(242, 80%, 48%)
CMYK	cmyk(77.9%, 80.3%, 0%, 52.2%)
CIE-LAB	lab(16.95, 36.02, -54.22)
CIE-LCH	lch(16.95, 65.09, 303.60°)
OKLab	oklab(29.96% 0.0078 -0.1569)
OKLCH	oklch(29.96% 0.157 272.9)
XYZ	xyz(4.2903, 2.2910, 18.6247)
Luminance	0.0229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B187A #777A18

analogous

#18467A #1B187A #4C187A

triadic

#1B187A #7A1B18 #187A1B

tetradic

#1B187A #7A1846 #777A18 #187A4C

square

#1B187A #7A1846 #777A18 #187A4C

split-complementary

#1B187A #7A4C18 #467A18

monochromatic

#06051A #100E47 #1B187A #2622AD #3A35D7

Accessibility & contrast

On white

14.40

#1B187A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1B187A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B187A

14.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B187A	#FFFFFF	#000000	##FFFFFF
##1B187A	1.00	14.40	1.46	14.40
#FFFFFF	14.40	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7D

Deuteranopia (green-blind)

#002578

Tritanopia (blue-blind)

#003648

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1b187a;
/* rgb */ color: rgb(27, 24, 122);
/* oklch */ color: oklch(30.0% 0.157 272.9);

Tailwind

colors: {
  custom: {
    50: '#6957a2',
    500: '#1b187a',
    950: '#000000',
  },
}

SCSS

$custom: #1b187a;
$custom-light: #6957a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b187a",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 122
  },
  "hsl": {
    "h": 241.837,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.29959,
    "c": 0.1571,
    "h": 272.9
  },
  "luminance": 0.02291
}

Semantic roles & 50–950 ramp

primary

#1B187A

secondary

#ABAF3F

accent

#EA3EE5

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #1B187A

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

Preview Lab → · Contrast checker → · Palette generator →