#1F4BA7#1F4BA7

#1F4BA7 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.0% C 0.156 H 262.6°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#1F4BA7
RGB	rgb(31, 75, 167)
HSL	hsl(221, 69%, 39%)
HSV	hsv(221, 81%, 65%)
CMYK	cmyk(81.4%, 55.1%, 0%, 34.5%)
CIE-LAB	lab(34.22, 20.02, -53.72)
CIE-LCH	lch(34.22, 57.33, 290.44°)
OKLab	oklab(43.99% -0.0201 -0.155)
OKLCH	oklch(43.99% 0.156 262.6)
XYZ	xyz(10.0537, 8.1123, 37.5877)
Luminance	0.0811 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4BA7 #A77B1F

analogous

#1F8FA7 #1F4BA7 #371FA7

triadic

#1F4BA7 #A71F4B #4BA71F

tetradic

#1F4BA7 #A71F8F #A77B1F #1FA737

square

#1F4BA7 #A71F8F #A77B1F #1FA737

split-complementary

#1F4BA7 #A7371F #8FA71F

monochromatic

#0C1D40 #153473 #1F4BA7 #2B63D8 #5F89E1

Accessibility & contrast

On white

8.01

#1F4BA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1F4BA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4BA7

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4BA7	#FFFFFF	#000000	##FFFFFF
##1F4BA7	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AA

Deuteranopia (green-blind)

#004BA5

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f4ba7;
/* rgb */ color: rgb(31, 75, 167);
/* oklch */ color: oklch(44.0% 0.156 262.6);

Tailwind

colors: {
  custom: {
    50: '#727cc2',
    500: '#1f4ba7',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ba7;
$custom-light: #727cc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ba7",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 167
  },
  "hsl": {
    "h": 220.588,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.4399,
    "c": 0.15631,
    "h": 262.6
  },
  "luminance": 0.08113
}

Semantic roles & 50–950 ramp

primary

#1F4BA7

secondary

#C6A45C

accent

#B33CEC

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4BA7

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

Preview Lab → · Contrast checker → · Palette generator →