#1F3386#1F3386

#1F3386 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.1% C 0.141 H 268.1°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#1F3386
RGB	rgb(31, 51, 134)
HSL	hsl(228, 62%, 32%)
HSV	hsv(228, 77%, 53%)
CMYK	cmyk(76.9%, 61.9%, 0%, 47.5%)
CIE-LAB	lab(24.89, 23.40, -48.75)
CIE-LCH	lch(24.89, 54.07, 295.64°)
OKLab	oklab(36.14% -0.0048 -0.1408)
OKLCH	oklch(36.14% 0.141 268.1)
XYZ	xyz(6.0505, 4.3795, 23.0761)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3386 #86721F

analogous

#1F6686 #1F3386 #3F1F86

triadic

#1F3386 #861F33 #33861F

tetradic

#1F3386 #861F66 #86721F #1F863F

square

#1F3386 #861F66 #86721F #1F863F

split-complementary

#1F3386 #863F1F #66861F

monochromatic

#080D23 #142054 #1F3386 #2A46B8 #4A65D5

Accessibility & contrast

On white

11.19

#1F3386 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1F3386 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3386

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3386	#FFFFFF	#000000	##FFFFFF
##1F3386	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004089

Deuteranopia (green-blind)

#003684

Tritanopia (blue-blind)

#004857

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f3386;
/* rgb */ color: rgb(31, 51, 134);
/* oklch */ color: oklch(36.1% 0.141 268.1);

Tailwind

colors: {
  custom: {
    50: '#6b6aaa',
    500: '#1f3386',
    950: '#000000',
  },
}

SCSS

$custom: #1f3386;
$custom-light: #6b6aaa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3386",
  "rgb": {
    "r": 31,
    "g": 51,
    "b": 134
  },
  "hsl": {
    "h": 228.35,
    "s": 62.424,
    "l": 32.353
  },
  "oklch": {
    "l": 0.36145,
    "c": 0.14087,
    "h": 268.1
  },
  "luminance": 0.0438
}

Semantic roles & 50–950 ramp

primary

#1F3386

secondary

#B8A249

accent

#C642E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1F3386

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

Preview Lab → · Contrast checker → · Palette generator →