#1F4CA7#1F4CA7

#1F4CA7 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.2% C 0.155 H 262.3°. Best body text is #FFFFFF at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#1F4CA7
RGB	rgb(31, 76, 167)
HSL	hsl(220, 69%, 39%)
HSV	hsv(220, 81%, 65%)
CMYK	cmyk(81.4%, 54.5%, 0%, 34.5%)
CIE-LAB	lab(34.50, 19.34, -53.27)
CIE-LCH	lch(34.50, 56.67, 289.96°)
OKLab	oklab(44.2% -0.0208 -0.1536)
OKLCH	oklch(44.2% 0.155 262.3)
XYZ	xyz(10.1221, 8.2490, 37.6105)
Luminance	0.0825 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4CA7 #A77A1F

analogous

#1F90A7 #1F4CA7 #361FA7

triadic

#1F4CA7 #A71F4C #4CA71F

tetradic

#1F4CA7 #A71F90 #A77A1F #1FA736

square

#1F4CA7 #A71F90 #A77A1F #1FA736

split-complementary

#1F4CA7 #A7361F #90A71F

monochromatic

#0C1D40 #153573 #1F4CA7 #2B64D8 #5F8AE1

Accessibility & contrast

On white

7.92

#1F4CA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#1F4CA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4CA7

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4CA7	#FFFFFF	#000000	##FFFFFF
##1F4CA7	1.00	7.92	2.65	7.92
#FFFFFF	7.92	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AA

Deuteranopia (green-blind)

#004BA5

Tritanopia (blue-blind)

#006272

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f4ca7;
/* rgb */ color: rgb(31, 76, 167);
/* oklch */ color: oklch(44.2% 0.155 262.3);

Tailwind

colors: {
  custom: {
    50: '#727dc2',
    500: '#1f4ca7',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ca7;
$custom-light: #727dc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ca7",
  "rgb": {
    "r": 31,
    "g": 76,
    "b": 167
  },
  "hsl": {
    "h": 220.147,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.44203,
    "c": 0.15506,
    "h": 262.3
  },
  "luminance": 0.0825
}

Semantic roles & 50–950 ramp

primary

#1F4CA7

secondary

#C6A35C

accent

#B23CEC

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4CA7

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

Preview Lab → · Contrast checker → · Palette generator →