#1B198D#1B198D

#1B198D is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.4% C 0.180 H 271.0°. Best body text is #FFFFFF at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B198D
RGB	rgb(27, 25, 141)
HSL	hsl(241, 70%, 33%)
HSV	hsv(241, 82%, 55%)
CMYK	cmyk(80.9%, 82.3%, 0%, 44.7%)
CIE-LAB	lab(19.44, 41.89, -62.10)
CIE-LCH	lch(19.44, 74.91, 304.00°)
OKLab	oklab(32.37% 0.0032 -0.1798)
OKLCH	oklch(32.37% 0.18 271)
XYZ	xyz(5.6057, 2.8507, 25.4489)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B198D #8B8D19

analogous

#19518D #1B198D #55198D

triadic

#1B198D #8D1B19 #198D1B

tetradic

#1B198D #8D1951 #8B8D19 #198D55

square

#1B198D #8D1951 #8B8D19 #198D55

split-complementary

#1B198D #8D5519 #518D19

monochromatic

#070725 #111059 #1B198D #2522C1 #4543DE

Accessibility & contrast

On white

13.37

#1B198D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B198D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B198D

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B198D	#FFFFFF	#000000	##FFFFFF
##1B198D	1.00	13.37	1.57	13.37
#FFFFFF	13.37	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003590

Deuteranopia (green-blind)

#00298B

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b198d;
/* rgb */ color: rgb(27, 25, 141);
/* oklch */ color: oklch(32.4% 0.180 271.0);

Tailwind

colors: {
  custom: {
    50: '#6e59b0',
    500: '#1b198d',
    950: '#000000',
  },
}

SCSS

$custom: #1b198d;
$custom-light: #6e59b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b198d",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 141
  },
  "hsl": {
    "h": 241.034,
    "s": 69.88,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32371,
    "c": 0.1798,
    "h": 271
  },
  "luminance": 0.02851
}

Semantic roles & 50–950 ramp

primary

#1B198D

secondary

#BCBF43

accent

#ED3BEA

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1B198D

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

Preview Lab → · Contrast checker → · Palette generator →