#1B197A#1B197A

#1B197A is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.156 H 272.7°. Best body text is #FFFFFF at 14.32:1 contrast (WCAG AA passes).

Color values

HEX	#1B197A
RGB	rgb(27, 25, 122)
HSL	hsl(241, 66%, 29%)
HSV	hsv(241, 80%, 48%)
CMYK	cmyk(77.9%, 79.5%, 0%, 52.2%)
CIE-LAB	lab(17.15, 35.45, -53.89)
CIE-LCH	lch(17.15, 64.50, 303.34°)
OKLab	oklab(30.1% 0.0074 -0.1559)
OKLCH	oklch(30.1% 0.156 272.7)
XYZ	xyz(4.3113, 2.3330, 18.6317)
Luminance	0.0233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B197A #787A19

analogous

#19487A #1B197A #4C197A

triadic

#1B197A #7A1B19 #197A1B

tetradic

#1B197A #7A1948 #787A19 #197A4C

square

#1B197A #7A1948 #787A19 #197A4C

split-complementary

#1B197A #7A4C19 #487A19

monochromatic

#060519 #100F47 #1B197A #2623AD #3B37D6

Accessibility & contrast

On white

14.32

#1B197A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1B197A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B197A

14.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B197A	#FFFFFF	#000000	##FFFFFF
##1B197A	1.00	14.32	1.47	14.32
#FFFFFF	14.32	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7D

Deuteranopia (green-blind)

#002578

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1b197a;
/* rgb */ color: rgb(27, 25, 122);
/* oklch */ color: oklch(30.1% 0.156 272.7);

Tailwind

colors: {
  custom: {
    50: '#6957a2',
    500: '#1b197a',
    950: '#000000',
  },
}

SCSS

$custom: #1b197a;
$custom-light: #6957a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b197a",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 122
  },
  "hsl": {
    "h": 241.237,
    "s": 65.986,
    "l": 28.824
  },
  "oklch": {
    "l": 0.301,
    "c": 0.15613,
    "h": 272.7
  },
  "luminance": 0.02333
}

Semantic roles & 50–950 ramp

primary

#1B197A

secondary

#ACAF40

accent

#E93FE5

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #1B197A

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

Preview Lab → · Contrast checker → · Palette generator →