#1B148D#1B148D

#1B148D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.184 H 271.4°. Best body text is #FFFFFF at 13.71:1 contrast (WCAG AA passes).

Color values

HEX	#1B148D
RGB	rgb(27, 20, 141)
HSL	hsl(243, 75%, 32%)
HSV	hsv(243, 86%, 55%)
CMYK	cmyk(80.9%, 85.8%, 0%, 44.7%)
CIE-LAB	lab(18.61, 44.31, -63.47)
CIE-LCH	lch(18.61, 77.41, 304.92°)
OKLab	oklab(31.8% 0.0044 -0.1836)
OKLCH	oklch(31.8% 0.184 271.4)
XYZ	xyz(5.5082, 2.6558, 25.4165)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B148D #868D14

analogous

#144A8D #1B148D #58148D

triadic

#1B148D #8D1B14 #148D1B

tetradic

#1B148D #8D144A #868D14 #148D58

square

#1B148D #8D144A #868D14 #148D58

split-complementary

#1B148D #8D5814 #4A8D14

monochromatic

#060522 #110C57 #1B148D #251CC3 #4239E3

Accessibility & contrast

On white

13.71

#1B148D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1B148D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B148D

13.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B148D	#FFFFFF	#000000	##FFFFFF
##1B148D	1.00	13.71	1.53	13.71
#FFFFFF	13.71	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003390

Deuteranopia (green-blind)

#00278B

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b148d;
/* rgb */ color: rgb(27, 20, 141);
/* oklch */ color: oklch(31.8% 0.184 271.4);

Tailwind

colors: {
  custom: {
    50: '#6f56b0',
    500: '#1b148d',
    950: '#000000',
  },
}

SCSS

$custom: #1b148d;
$custom-light: #6f56b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b148d",
  "rgb": {
    "r": 27,
    "g": 20,
    "b": 141
  },
  "hsl": {
    "h": 243.471,
    "s": 75.155,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31798,
    "c": 0.1837,
    "h": 271.4
  },
  "luminance": 0.02656
}

Semantic roles & 50–950 ramp

primary

#1B148D

secondary

#B9C13C

accent

#F236E7

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B148D

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

Preview Lab → · Contrast checker → · Palette generator →