#1B188D#1B188D

#1B188D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.181 H 271.1°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B188D
RGB	rgb(27, 24, 141)
HSL	hsl(242, 71%, 32%)
HSV	hsv(242, 83%, 55%)
CMYK	cmyk(80.9%, 83%, 0%, 44.7%)
CIE-LAB	lab(19.26, 42.40, -62.39)
CIE-LCH	lch(19.26, 75.43, 304.20°)
OKLab	oklab(32.25% 0.0034 -0.1806)
OKLCH	oklch(32.25% 0.181 271.1)
XYZ	xyz(5.5847, 2.8087, 25.4419)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B188D #8A8D18

analogous

#18508D #1B188D #55188D

triadic

#1B188D #8D1B18 #188D1B

tetradic

#1B188D #8D1850 #8A8D18 #188D55

square

#1B188D #8D1850 #8A8D18 #188D55

split-complementary

#1B188D #8D5518 #508D18

monochromatic

#070624 #110F59 #1B188D #2521C1 #4541DF

Accessibility & contrast

On white

13.45

#1B188D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B188D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B188D

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B188D	#FFFFFF	#000000	##FFFFFF
##1B188D	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003490

Deuteranopia (green-blind)

#00298B

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b188d;
/* rgb */ color: rgb(27, 24, 141);
/* oklch */ color: oklch(32.2% 0.181 271.1);

Tailwind

colors: {
  custom: {
    50: '#6e58b0',
    500: '#1b188d',
    950: '#000000',
  },
}

SCSS

$custom: #1b188d;
$custom-light: #6e58b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b188d",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 141
  },
  "hsl": {
    "h": 241.538,
    "s": 70.909,
    "l": 32.353
  },
  "oklch": {
    "l": 0.32249,
    "c": 0.18062,
    "h": 271.1
  },
  "luminance": 0.02809
}

Semantic roles & 50–950 ramp

primary

#1B188D

secondary

#BCBF42

accent

#EE3AE9

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B188D

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

Preview Lab → · Contrast checker → · Palette generator →