#1B148E#1B148E

#1B148E is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.185 H 271.3°. Best body text is #FFFFFF at 13.66:1 contrast (WCAG AA passes).

Color values

HEX	#1B148E
RGB	rgb(27, 20, 142)
HSL	hsl(243, 75%, 32%)
HSV	hsv(243, 86%, 56%)
CMYK	cmyk(81%, 85.9%, 0%, 44.3%)
CIE-LAB	lab(18.74, 44.63, -63.88)
CIE-LCH	lch(18.74, 77.93, 304.94°)
OKLab	oklab(31.92% 0.0041 -0.1848)
OKLCH	oklch(31.92% 0.185 271.3)
XYZ	xyz(5.5830, 2.6857, 25.8101)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B148E #878E14

analogous

#144A8E #1B148E #58148E

triadic

#1B148E #8E1B14 #148E1B

tetradic

#1B148E #8E144A #878E14 #148E58

square

#1B148E #8E144A #878E14 #148E58

split-complementary

#1B148E #8E5814 #4A8E14

monochromatic

#070523 #110C58 #1B148E #251CC4 #4339E3

Accessibility & contrast

On white

13.66

#1B148E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1B148E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B148E

13.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B148E	#FFFFFF	#000000	##FFFFFF
##1B148E	1.00	13.66	1.54	13.66
#FFFFFF	13.66	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003391

Deuteranopia (green-blind)

#00278C

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b148e;
/* rgb */ color: rgb(27, 20, 142);
/* oklch */ color: oklch(31.9% 0.185 271.3);

Tailwind

colors: {
  custom: {
    50: '#6f56b0',
    500: '#1b148e',
    950: '#000000',
  },
}

SCSS

$custom: #1b148e;
$custom-light: #6f56b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b148e",
  "rgb": {
    "r": 27,
    "g": 20,
    "b": 142
  },
  "hsl": {
    "h": 243.443,
    "s": 75.309,
    "l": 31.765
  },
  "oklch": {
    "l": 0.31924,
    "c": 0.18488,
    "h": 271.3
  },
  "luminance": 0.02686
}

Semantic roles & 50–950 ramp

primary

#1B148E

secondary

#BAC23C

accent

#F236E7

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B148E

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

Preview Lab → · Contrast checker → · Palette generator →