#1F47A1#1F47A1

#1F47A1 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.6% C 0.153 H 263.3°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#1F47A1
RGB	rgb(31, 71, 161)
HSL	hsl(222, 68%, 38%)
HSV	hsv(222, 81%, 63%)
CMYK	cmyk(80.7%, 55.9%, 0%, 36.9%)
CIE-LAB	lab(32.63, 20.35, -52.69)
CIE-LCH	lch(32.63, 56.48, 291.12°)
OKLab	oklab(42.65% -0.0179 -0.152)
OKLCH	oklch(42.65% 0.153 263.3)
XYZ	xyz(9.2490, 7.3699, 34.6464)
Luminance	0.0737 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F47A1 #A1791F

analogous

#1F88A1 #1F47A1 #381FA1

triadic

#1F47A1 #A11F47 #47A11F

tetradic

#1F47A1 #A11F88 #A1791F #1FA138

square

#1F47A1 #A11F88 #A1791F #1FA138

split-complementary

#1F47A1 #A1381F #88A11F

monochromatic

#0B1A3A #15306E #1F47A1 #295ED4 #5B84DF

Accessibility & contrast

On white

8.49

#1F47A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#1F47A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F47A1

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F47A1	#FFFFFF	#000000	##FFFFFF
##1F47A1	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A4

Deuteranopia (green-blind)

#00479F

Tritanopia (blue-blind)

#005D6D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f47a1;
/* rgb */ color: rgb(31, 71, 161);
/* oklch */ color: oklch(42.6% 0.153 263.3);

Tailwind

colors: {
  custom: {
    50: '#7179be',
    500: '#1f47a1',
    950: '#000000',
  },
}

SCSS

$custom: #1f47a1;
$custom-light: #7179be;
$custom-dark: #000000;

JSON

{
  "hex": "#1f47a1",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 161
  },
  "hsl": {
    "h": 221.538,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.42648,
    "c": 0.15309,
    "h": 263.3
  },
  "luminance": 0.07371
}

Semantic roles & 50–950 ramp

primary

#1F47A1

secondary

#C4A358

accent

#B53DEB

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F47A1

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

Preview Lab → · Contrast checker → · Palette generator →