#1F4899#1F4899

#1F4899 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.2% C 0.141 H 262.1°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#1F4899
RGB	rgb(31, 72, 153)
HSL	hsl(220, 66%, 36%)
HSV	hsv(220, 80%, 60%)
CMYK	cmyk(79.7%, 52.9%, 0%, 40%)
CIE-LAB	lab(32.31, 16.48, -48.37)
CIE-LCH	lch(32.31, 51.10, 288.82°)
OKLab	oklab(42.21% -0.0194 -0.1393)
OKLCH	oklch(42.21% 0.141 262.1)
XYZ	xyz(8.6301, 7.2249, 31.0705)
Luminance	0.0723 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4899 #99701F

analogous

#1F8599 #1F4899 #331F99

triadic

#1F4899 #991F48 #48991F

tetradic

#1F4899 #991F85 #99701F #1F9933

square

#1F4899 #991F85 #99701F #1F9933

split-complementary

#1F4899 #99331F #85991F

monochromatic

#0A1833 #153066 #1F4899 #2960CC #5683DD

Accessibility & contrast

On white

8.59

#1F4899 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1F4899 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4899

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4899	#FFFFFF	#000000	##FFFFFF
##1F4899	1.00	8.59	2.45	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10529C

Deuteranopia (green-blind)

#004797

Tritanopia (blue-blind)

#005C69

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f4899;
/* rgb */ color: rgb(31, 72, 153);
/* oklch */ color: oklch(42.2% 0.141 262.1);

Tailwind

colors: {
  custom: {
    50: '#6f7ab8',
    500: '#1f4899',
    950: '#000000',
  },
}

SCSS

$custom: #1f4899;
$custom-light: #6f7ab8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4899",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 153
  },
  "hsl": {
    "h": 219.836,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.42213,
    "c": 0.14067,
    "h": 262.1
  },
  "luminance": 0.07226
}

Semantic roles & 50–950 ramp

primary

#1F4899

secondary

#C09C54

accent

#B03FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4899

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

Preview Lab → · Contrast checker → · Palette generator →