#1F3D82#1F3D82

#1F3D82 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.9% C 0.122 H 263.8°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#1F3D82
RGB	rgb(31, 61, 130)
HSL	hsl(222, 61%, 32%)
HSV	hsv(222, 76%, 51%)
CMYK	cmyk(76.2%, 53.1%, 0%, 49%)
CIE-LAB	lab(27.41, 14.84, -42.16)
CIE-LCH	lch(27.41, 44.69, 289.39°)
OKLab	oklab(37.94% -0.0131 -0.1212)
OKLCH	oklch(37.94% 0.122 263.8)
XYZ	xyz(6.2617, 5.2398, 21.7961)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3D82 #82641F

analogous

#1F6F82 #1F3D82 #331F82

triadic

#1F3D82 #821F3D #3D821F

tetradic

#1F3D82 #821F6F #82641F #1F8233

square

#1F3D82 #821F6F #82641F #1F8233

split-complementary

#1F3D82 #82331F #6F821F

monochromatic

#070F1F #132651 #1F3D82 #2B54B3 #4872D3

Accessibility & contrast

On white

10.25

#1F3D82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1F3D82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3D82

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3D82	#FFFFFF	#000000	##FFFFFF
##1F3D82	1.00	10.25	2.05	10.25
#FFFFFF	10.25	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114684

Deuteranopia (green-blind)

#003C81

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f3d82;
/* rgb */ color: rgb(31, 61, 130);
/* oklch */ color: oklch(37.9% 0.122 263.8);

Tailwind

colors: {
  custom: {
    50: '#6a72a7',
    500: '#1f3d82',
    950: '#000000',
  },
}

SCSS

$custom: #1f3d82;
$custom-light: #6a72a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3d82",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 130
  },
  "hsl": {
    "h": 221.818,
    "s": 61.491,
    "l": 31.569
  },
  "oklch": {
    "l": 0.37939,
    "c": 0.12195,
    "h": 263.8
  },
  "luminance": 0.0524
}

Semantic roles & 50–950 ramp

primary

#1F3D82

secondary

#B59448

accent

#B443E5

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1F3D82

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

Preview Lab → · Contrast checker → · Palette generator →