#1F3785#1F3785

#1F3785 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.9% C 0.134 H 266.7°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#1F3785
RGB	rgb(31, 55, 133)
HSL	hsl(226, 62%, 32%)
HSV	hsv(226, 77%, 52%)
CMYK	cmyk(76.7%, 58.6%, 0%, 47.8%)
CIE-LAB	lab(25.91, 20.23, -46.45)
CIE-LCH	lch(25.91, 50.67, 293.53°)
OKLab	oklab(36.88% -0.0078 -0.134)
OKLCH	oklch(36.88% 0.134 266.7)
XYZ	xyz(6.1634, 4.7165, 22.7713)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3785 #856D1F

analogous

#1F6A85 #1F3785 #3A1F85

triadic

#1F3785 #851F37 #37851F

tetradic

#1F3785 #851F6A #856D1F #1F853A

square

#1F3785 #851F6A #856D1F #1F853A

split-complementary

#1F3785 #853A1F #6A851F

monochromatic

#080E22 #132253 #1F3785 #2B4CB7 #4A6AD5

Accessibility & contrast

On white

10.81

#1F3785 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1F3785 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3785

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3785	#FFFFFF	#000000	##FFFFFF
##1F3785	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004288

Deuteranopia (green-blind)

#003983

Tritanopia (blue-blind)

#004A58

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f3785;
/* rgb */ color: rgb(31, 55, 133);
/* oklch */ color: oklch(36.9% 0.134 266.7);

Tailwind

colors: {
  custom: {
    50: '#6b6da9',
    500: '#1f3785',
    950: '#000000',
  },
}

SCSS

$custom: #1f3785;
$custom-light: #6b6da9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3785",
  "rgb": {
    "r": 31,
    "g": 55,
    "b": 133
  },
  "hsl": {
    "h": 225.882,
    "s": 62.195,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36882,
    "c": 0.13423,
    "h": 266.7
  },
  "luminance": 0.04717
}

Semantic roles & 50–950 ramp

primary

#1F3785

secondary

#B79D49

accent

#BF43E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1F3785

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

Preview Lab → · Contrast checker → · Palette generator →