#1F3586#1F3586

#1F3586 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.6% C 0.138 H 267.4°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#1F3586
RGB	rgb(31, 53, 134)
HSL	hsl(227, 62%, 32%)
HSV	hsv(227, 77%, 53%)
CMYK	cmyk(76.9%, 60.4%, 0%, 47.5%)
CIE-LAB	lab(25.44, 22.01, -47.85)
CIE-LCH	lch(25.44, 52.67, 294.70°)
OKLab	oklab(36.55% -0.0063 -0.1381)
OKLCH	oklch(36.55% 0.138 267.4)
XYZ	xyz(6.1398, 4.5581, 23.1058)
Luminance	0.0456 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3586 #86701F

analogous

#1F6986 #1F3586 #3C1F86

triadic

#1F3586 #861F35 #35861F

tetradic

#1F3586 #861F69 #86701F #1F863C

square

#1F3586 #861F69 #86701F #1F863C

split-complementary

#1F3586 #863C1F #69861F

monochromatic

#080E23 #142154 #1F3586 #2A49B8 #4A68D5

Accessibility & contrast

On white

10.98

#1F3586 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1F3586 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3586

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3586	#FFFFFF	#000000	##FFFFFF
##1F3586	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004189

Deuteranopia (green-blind)

#003884

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f3586;
/* rgb */ color: rgb(31, 53, 134);
/* oklch */ color: oklch(36.6% 0.138 267.4);

Tailwind

colors: {
  custom: {
    50: '#6b6baa',
    500: '#1f3586',
    950: '#000000',
  },
}

SCSS

$custom: #1f3586;
$custom-light: #6b6baa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3586",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 134
  },
  "hsl": {
    "h": 227.184,
    "s": 62.424,
    "l": 32.353
  },
  "oklch": {
    "l": 0.36553,
    "c": 0.13827,
    "h": 267.4
  },
  "luminance": 0.04559
}

Semantic roles & 50–950 ramp

primary

#1F3586

secondary

#B8A049

accent

#C342E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1F3586

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

Preview Lab → · Contrast checker → · Palette generator →