#1F4790#1F4790

#1F4790 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.3% C 0.129 H 261.2°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#1F4790
RGB	rgb(31, 71, 144)
HSL	hsl(219, 65%, 34%)
HSV	hsv(219, 78%, 56%)
CMYK	cmyk(78.5%, 50.7%, 0%, 43.5%)
CIE-LAB	lab(31.37, 13.56, -44.41)
CIE-LCH	lch(31.37, 46.43, 286.98°)
OKLab	oklab(41.29% -0.0197 -0.1277)
OKLCH	oklch(41.29% 0.129 261.2)
XYZ	xyz(7.8505, 6.8105, 27.2810)
Luminance	0.0681 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4790 #90681F

analogous

#1F8090 #1F4790 #301F90

triadic

#1F4790 #901F47 #47901F

tetradic

#1F4790 #901F80 #90681F #1F9030

square

#1F4790 #901F80 #90681F #1F9030

split-complementary

#1F4790 #90301F #80901F

monochromatic

#09152B #142E5E #1F4790 #2A60C2 #5081D9

Accessibility & contrast

On white

8.89

#1F4790 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1F4790 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4790

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4790	#FFFFFF	#000000	##FFFFFF
##1F4790	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4F93

Deuteranopia (green-blind)

#00458F

Tritanopia (blue-blind)

#005964

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f4790;
/* rgb */ color: rgb(31, 71, 144);
/* oklch */ color: oklch(41.3% 0.129 261.2);

Tailwind

colors: {
  custom: {
    50: '#6c79b1',
    500: '#1f4790',
    950: '#000000',
  },
}

SCSS

$custom: #1f4790;
$custom-light: #6c79b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4790",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 144
  },
  "hsl": {
    "h": 218.761,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.41287,
    "c": 0.12921,
    "h": 261.2
  },
  "luminance": 0.06811
}

Semantic roles & 50–950 ramp

primary

#1F4790

secondary

#BC954E

accent

#AC40E8

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4790

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

Preview Lab → · Contrast checker → · Palette generator →