#1F4AA7#1F4AA7

#1F4AA7 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.8% C 0.158 H 262.9°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#1F4AA7
RGB	rgb(31, 74, 167)
HSL	hsl(221, 69%, 39%)
HSV	hsv(221, 81%, 65%)
CMYK	cmyk(81.4%, 55.7%, 0%, 34.5%)
CIE-LAB	lab(33.94, 20.69, -54.17)
CIE-LCH	lch(33.94, 57.99, 290.90°)
OKLab	oklab(43.78% -0.0195 -0.1564)
OKLCH	oklch(43.78% 0.158 262.9)
XYZ	xyz(9.9864, 7.9777, 37.5652)
Luminance	0.0798 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4AA7 #A77C1F

analogous

#1F8EA7 #1F4AA7 #381FA7

triadic

#1F4AA7 #A71F4A #4AA71F

tetradic

#1F4AA7 #A71F8E #A77C1F #1FA738

square

#1F4AA7 #A71F8E #A77C1F #1FA738

split-complementary

#1F4AA7 #A7381F #8EA71F

monochromatic

#0C1C40 #153373 #1F4AA7 #2B62D8 #5F88E1

Accessibility & contrast

On white

8.09

#1F4AA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#1F4AA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4AA7

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4AA7	#FFFFFF	#000000	##FFFFFF
##1F4AA7	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056AA

Deuteranopia (green-blind)

#004AA5

Tritanopia (blue-blind)

#006171

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f4aa7;
/* rgb */ color: rgb(31, 74, 167);
/* oklch */ color: oklch(43.8% 0.158 262.9);

Tailwind

colors: {
  custom: {
    50: '#727bc2',
    500: '#1f4aa7',
    950: '#000000',
  },
}

SCSS

$custom: #1f4aa7;
$custom-light: #727bc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4aa7",
  "rgb": {
    "r": 31,
    "g": 74,
    "b": 167
  },
  "hsl": {
    "h": 221.029,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.43779,
    "c": 0.15757,
    "h": 262.9
  },
  "luminance": 0.07979
}

Semantic roles & 50–950 ramp

primary

#1F4AA7

secondary

#C6A45C

accent

#B43CEC

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4AA7

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

Preview Lab → · Contrast checker → · Palette generator →