#1F479E#1F479E

#1F479E is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.4% C 0.149 H 263.0°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#1F479E
RGB	rgb(31, 71, 158)
HSL	hsl(221, 67%, 37%)
HSV	hsv(221, 80%, 62%)
CMYK	cmyk(80.4%, 55.1%, 0%, 38%)
CIE-LAB	lab(32.40, 19.16, -51.25)
CIE-LCH	lch(32.40, 54.72, 290.49°)
OKLab	oklab(42.4% -0.0181 -0.1478)
OKLCH	oklch(42.4% 0.149 263)
XYZ	xyz(8.9877, 7.2653, 33.2698)
Luminance	0.0727 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F479E #9E761F

analogous

#1F879E #1F479E #361F9E

triadic

#1F479E #9E1F47 #479E1F

tetradic

#1F479E #9E1F87 #9E761F #1F9E36

square

#1F479E #9E1F87 #9E761F #1F9E36

split-complementary

#1F479E #9E361F #879E1F

monochromatic

#0B1938 #15306B #1F479E #295ED1 #5983DE

Accessibility & contrast

On white

8.56

#1F479E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1F479E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F479E

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F479E	#FFFFFF	#000000	##FFFFFF
##1F479E	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A1

Deuteranopia (green-blind)

#00479C

Tritanopia (blue-blind)

#005C6B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f479e;
/* rgb */ color: rgb(31, 71, 158);
/* oklch */ color: oklch(42.4% 0.149 263.0);

Tailwind

colors: {
  custom: {
    50: '#7079bb',
    500: '#1f479e',
    950: '#000000',
  },
}

SCSS

$custom: #1f479e;
$custom-light: #7079bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f479e",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 158
  },
  "hsl": {
    "h": 221.102,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.424,
    "c": 0.14894,
    "h": 263
  },
  "luminance": 0.07266
}

Semantic roles & 50–950 ramp

primary

#1F479E

secondary

#C2A056

accent

#B43EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F479E

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

Preview Lab → · Contrast checker → · Palette generator →