#1F199D#1F199D

#1F199D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.5% C 0.198 H 271.2°. Best body text is #FFFFFF at 12.47:1 contrast (WCAG AA passes).

Color values

HEX	#1F199D
RGB	rgb(31, 25, 157)
HSL	hsl(243, 73%, 36%)
HSV	hsv(243, 84%, 62%)
CMYK	cmyk(80.3%, 84.1%, 0%, 38.4%)
CIE-LAB	lab(21.65, 47.25, -68.31)
CIE-LCH	lch(21.65, 83.05, 304.67°)
OKLab	oklab(34.54% 0.0042 -0.1977)
OKLCH	oklch(34.54% 0.198 271.2)
XYZ	xyz(6.9965, 3.4201, 32.1832)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F199D #979D19

analogous

#19559D #1F199D #61199D

triadic

#1F199D #9D1F19 #199D1F

tetradic

#1F199D #9D1955 #979D19 #199D61

square

#1F199D #9D1955 #979D19 #199D61

split-complementary

#1F199D #9D6119 #559D19

monochromatic

#0A0833 #151168 #1F199D #2921D2 #544EE3

Accessibility & contrast

On white

12.47

#1F199D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1F199D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F199D

12.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F199D	#FFFFFF	#000000	##FFFFFF
##1F199D	1.00	12.47	1.68	12.47
#FFFFFF	12.47	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA1

Deuteranopia (green-blind)

#002D9B

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f199d;
/* rgb */ color: rgb(31, 25, 157);
/* oklch */ color: oklch(34.5% 0.198 271.2);

Tailwind

colors: {
  custom: {
    50: '#745abb',
    500: '#1f199d',
    950: '#000000',
  },
}

SCSS

$custom: #1f199d;
$custom-light: #745abb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f199d",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 157
  },
  "hsl": {
    "h": 242.727,
    "s": 72.527,
    "l": 35.686
  },
  "oklch": {
    "l": 0.34542,
    "c": 0.1977,
    "h": 271.2
  },
  "luminance": 0.03421
}

Semantic roles & 50–950 ramp

primary

#1F199D

secondary

#BFC54D

accent

#EF39E7

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F199D

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

Preview Lab → · Contrast checker → · Palette generator →