#1F2279#1F2279

#1F2279 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.144 H 273.1°. Best body text is #FFFFFF at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F2279
RGB	rgb(31, 34, 121)
HSL	hsl(238, 59%, 30%)
HSV	hsv(238, 74%, 47%)
CMYK	cmyk(74.4%, 71.9%, 0%, 52.5%)
CIE-LAB	lab(19.29, 29.93, -49.70)
CIE-LCH	lch(19.29, 58.02, 301.06°)
OKLab	oklab(31.66% 0.0078 -0.1437)
OKLCH	oklch(31.66% 0.144 273.1)
XYZ	xyz(4.5871, 2.8154, 18.3871)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2279 #79761F

analogous

#1F4F79 #1F2279 #491F79

triadic

#1F2279 #791F22 #22791F

tetradic

#1F2279 #791F4F #79761F #1F7949

square

#1F2279 #791F4F #79761F #1F7949

split-complementary

#1F2279 #79491F #4F791F

monochromatic

#060718 #131448 #1F2279 #2B30AA #4348CF

Accessibility & contrast

On white

13.43

#1F2279 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1F2279 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2279

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2279	#FFFFFF	#000000	##FFFFFF
##1F2279	1.00	13.43	1.56	13.43
#FFFFFF	13.43	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337C

Deuteranopia (green-blind)

#002B77

Tritanopia (blue-blind)

#003A4A

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f2279;
/* rgb */ color: rgb(31, 34, 121);
/* oklch */ color: oklch(31.7% 0.144 273.1);

Tailwind

colors: {
  custom: {
    50: '#6a5da1',
    500: '#1f2279',
    950: '#000000',
  },
}

SCSS

$custom: #1f2279;
$custom-light: #6a5da1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2279",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 121
  },
  "hsl": {
    "h": 238,
    "s": 59.211,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31664,
    "c": 0.14393,
    "h": 273.1
  },
  "luminance": 0.02816
}

Semantic roles & 50–950 ramp

primary

#1F2279

secondary

#ACA947

accent

#DD45E2

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1F2279

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

Preview Lab → · Contrast checker → · Palette generator →