#1F479F#1F479F

#1F479F is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.5% C 0.150 H 263.1°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F479F
RGB	rgb(31, 71, 159)
HSL	hsl(221, 67%, 37%)
HSV	hsv(221, 81%, 62%)
CMYK	cmyk(80.5%, 55.3%, 0%, 37.6%)
CIE-LAB	lab(32.48, 19.55, -51.73)
CIE-LCH	lch(32.48, 55.31, 290.71°)
OKLab	oklab(42.48% -0.018 -0.1492)
OKLCH	oklch(42.48% 0.15 263.1)
XYZ	xyz(9.0741, 7.2999, 33.7249)
Luminance	0.0730 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F479F #9F771F

analogous

#1F879F #1F479F #371F9F

triadic

#1F479F #9F1F47 #479F1F

tetradic

#1F479F #9F1F87 #9F771F #1F9F37

square

#1F479F #9F1F87 #9F771F #1F9F37

split-complementary

#1F479F #9F371F #879F1F

monochromatic

#0B1939 #15306C #1F479F #295ED2 #5A83DF

Accessibility & contrast

On white

8.54

#1F479F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1F479F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F479F

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F479F	#FFFFFF	#000000	##FFFFFF
##1F479F	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A2

Deuteranopia (green-blind)

#00479D

Tritanopia (blue-blind)

#005D6C

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f479f;
/* rgb */ color: rgb(31, 71, 159);
/* oklch */ color: oklch(42.5% 0.150 263.1);

Tailwind

colors: {
  custom: {
    50: '#7079bc',
    500: '#1f479f',
    950: '#000000',
  },
}

SCSS

$custom: #1f479f;
$custom-light: #7079bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f479f",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 159
  },
  "hsl": {
    "h": 221.25,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.42483,
    "c": 0.15032,
    "h": 263.1
  },
  "luminance": 0.07301
}

Semantic roles & 50–950 ramp

primary

#1F479F

secondary

#C3A157

accent

#B43EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F479F

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

Preview Lab → · Contrast checker → · Palette generator →