#1F3486#1F3486

#1F3486 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.3% C 0.140 H 267.7°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#1F3486
RGB	rgb(31, 52, 134)
HSL	hsl(228, 62%, 32%)
HSV	hsv(228, 77%, 53%)
CMYK	cmyk(76.9%, 61.2%, 0%, 47.5%)
CIE-LAB	lab(25.16, 22.71, -48.30)
CIE-LCH	lch(25.16, 53.37, 295.18°)
OKLab	oklab(36.35% -0.0055 -0.1395)
OKLCH	oklch(36.35% 0.14 267.7)
XYZ	xyz(6.0946, 4.4679, 23.0908)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3486 #86711F

analogous

#1F6886 #1F3486 #3E1F86

triadic

#1F3486 #861F34 #34861F

tetradic

#1F3486 #861F68 #86711F #1F863E

square

#1F3486 #861F68 #86711F #1F863E

split-complementary

#1F3486 #863E1F #68861F

monochromatic

#080D23 #142154 #1F3486 #2A47B8 #4A67D5

Accessibility & contrast

On white

11.09

#1F3486 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1F3486 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3486

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3486	#FFFFFF	#000000	##FFFFFF
##1F3486	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004189

Deuteranopia (green-blind)

#003784

Tritanopia (blue-blind)

#004957

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f3486;
/* rgb */ color: rgb(31, 52, 134);
/* oklch */ color: oklch(36.3% 0.140 267.7);

Tailwind

colors: {
  custom: {
    50: '#6b6baa',
    500: '#1f3486',
    950: '#000000',
  },
}

SCSS

$custom: #1f3486;
$custom-light: #6b6baa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3486",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 134
  },
  "hsl": {
    "h": 227.767,
    "s": 62.424,
    "l": 32.353
  },
  "oklch": {
    "l": 0.36348,
    "c": 0.13957,
    "h": 267.7
  },
  "luminance": 0.04469
}

Semantic roles & 50–950 ramp

primary

#1F3486

secondary

#B8A149

accent

#C442E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1F3486

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

Preview Lab → · Contrast checker → · Palette generator →