#1F479A#1F479A

#1F479A is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.1% C 0.143 H 262.6°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F479A
RGB	rgb(31, 71, 154)
HSL	hsl(220, 66%, 36%)
HSV	hsv(220, 80%, 60%)
CMYK	cmyk(79.9%, 53.9%, 0%, 39.6%)
CIE-LAB	lab(32.10, 17.56, -49.32)
CIE-LCH	lch(32.10, 52.36, 289.60°)
OKLab	oklab(42.08% -0.0185 -0.1421)
OKLCH	oklch(42.08% 0.143 262.6)
XYZ	xyz(8.6490, 7.1299, 31.4860)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F479A #9A721F

analogous

#1F859A #1F479A #351F9A

triadic

#1F479A #9A1F47 #479A1F

tetradic

#1F479A #9A1F85 #9A721F #1F9A35

square

#1F479A #9A1F85 #9A721F #1F9A35

split-complementary

#1F479A #9A351F #859A1F

monochromatic

#0A1834 #153067 #1F479A #295ECD #5682DD

Accessibility & contrast

On white

8.66

#1F479A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1F479A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F479A

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F479A	#FFFFFF	#000000	##FFFFFF
##1F479A	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07519D

Deuteranopia (green-blind)

#004698

Tritanopia (blue-blind)

#005B69

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f479a;
/* rgb */ color: rgb(31, 71, 154);
/* oklch */ color: oklch(42.1% 0.143 262.6);

Tailwind

colors: {
  custom: {
    50: '#6f79b8',
    500: '#1f479a',
    950: '#000000',
  },
}

SCSS

$custom: #1f479a;
$custom-light: #6f79b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f479a",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 154
  },
  "hsl": {
    "h": 220.488,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.42075,
    "c": 0.14335,
    "h": 262.6
  },
  "luminance": 0.07131
}

Semantic roles & 50–950 ramp

primary

#1F479A

secondary

#C19D54

accent

#B23EE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F479A

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

Preview Lab → · Contrast checker → · Palette generator →