#1F4499#1F4499

#1F4499 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.3% C 0.146 H 263.6°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F4499
RGB	rgb(31, 68, 153)
HSL	hsl(222, 66%, 36%)
HSV	hsv(222, 80%, 60%)
CMYK	cmyk(79.7%, 55.6%, 0%, 40%)
CIE-LAB	lab(31.17, 19.21, -50.22)
CIE-LCH	lch(31.17, 53.77, 290.93°)
OKLab	oklab(41.35% -0.0164 -0.1448)
OKLCH	oklch(41.35% 0.146 263.6)
XYZ	xyz(8.3799, 6.7245, 30.9871)
Luminance	0.0673 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4499 #99741F

analogous

#1F8199 #1F4499 #371F99

triadic

#1F4499 #991F44 #44991F

tetradic

#1F4499 #991F81 #99741F #1F9937

square

#1F4499 #991F81 #99741F #1F9937

split-complementary

#1F4499 #99371F #81991F

monochromatic

#0A1733 #152D66 #1F4499 #295BCC #567FDD

Accessibility & contrast

On white

8.96

#1F4499 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1F4499 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4499

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4499	#FFFFFF	#000000	##FFFFFF
##1F4499	1.00	8.96	2.35	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9C

Deuteranopia (green-blind)

#004497

Tritanopia (blue-blind)

#005967

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f4499;
/* rgb */ color: rgb(31, 68, 153);
/* oklch */ color: oklch(41.3% 0.146 263.6);

Tailwind

colors: {
  custom: {
    50: '#6f77b8',
    500: '#1f4499',
    950: '#000000',
  },
}

SCSS

$custom: #1f4499;
$custom-light: #6f77b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4499",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 153
  },
  "hsl": {
    "h": 221.803,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.41346,
    "c": 0.14577,
    "h": 263.6
  },
  "luminance": 0.06725
}

Semantic roles & 50–950 ramp

primary

#1F4499

secondary

#C09F54

accent

#B53FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4499

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

Preview Lab → · Contrast checker → · Palette generator →