#1F4D99#1F4D99

#1F4D99 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.3% C 0.134 H 260.0°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#1F4D99
RGB	rgb(31, 77, 153)
HSL	hsl(217, 66%, 36%)
HSV	hsv(217, 80%, 60%)
CMYK	cmyk(79.7%, 49.7%, 0%, 40%)
CIE-LAB	lab(33.77, 13.09, -46.02)
CIE-LCH	lch(33.77, 47.85, 285.88°)
OKLab	oklab(43.33% -0.0234 -0.1323)
OKLCH	oklch(43.33% 0.134 260)
XYZ	xyz(8.9666, 7.8979, 31.1827)
Luminance	0.0790 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4D99 #996B1F

analogous

#1F8A99 #1F4D99 #2E1F99

triadic

#1F4D99 #991F4D #4D991F

tetradic

#1F4D99 #991F8A #996B1F #1F992E

square

#1F4D99 #991F8A #996B1F #1F992E

split-complementary

#1F4D99 #992E1F #8A991F

monochromatic

#0A1A33 #153366 #1F4D99 #2967CC #5689DD

Accessibility & contrast

On white

8.14

#1F4D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1F4D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4D99

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4D99	#FFFFFF	#000000	##FFFFFF
##1F4D99	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21559C

Deuteranopia (green-blind)

#004A97

Tritanopia (blue-blind)

#005F6B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f4d99;
/* rgb */ color: rgb(31, 77, 153);
/* oklch */ color: oklch(43.3% 0.134 260.0);

Tailwind

colors: {
  custom: {
    50: '#6e7eb8',
    500: '#1f4d99',
    950: '#000000',
  },
}

SCSS

$custom: #1f4d99;
$custom-light: #6e7eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4d99",
  "rgb": {
    "r": 31,
    "g": 77,
    "b": 153
  },
  "hsl": {
    "h": 217.377,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43326,
    "c": 0.13436,
    "h": 260
  },
  "luminance": 0.07899
}

Semantic roles & 50–950 ramp

primary

#1F4D99

secondary

#C09754

accent

#A93FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4D99

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

Preview Lab → · Contrast checker → · Palette generator →