#1F3884#1F3884

#1F3884 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.0% C 0.131 H 266.2°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#1F3884
RGB	rgb(31, 56, 132)
HSL	hsl(225, 62%, 32%)
HSV	hsv(225, 77%, 52%)
CMYK	cmyk(76.5%, 57.6%, 0%, 48.2%)
CIE-LAB	lab(26.11, 19.13, -45.50)
CIE-LCH	lch(26.11, 49.36, 292.80°)
OKLab	oklab(37.01% -0.0087 -0.1312)
OKLCH	oklch(37.01% 0.131 266.2)
XYZ	xyz(6.1426, 4.7849, 22.4252)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3884 #846B1F

analogous

#1F6A84 #1F3884 #391F84

triadic

#1F3884 #841F38 #38841F

tetradic

#1F3884 #841F6A #846B1F #1F8439

square

#1F3884 #841F6A #846B1F #1F8439

split-complementary

#1F3884 #84391F #6A841F

monochromatic

#080E21 #132352 #1F3884 #2B4DB6 #496CD4

Accessibility & contrast

On white

10.73

#1F3884 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1F3884 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3884

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3884	#FFFFFF	#000000	##FFFFFF
##1F3884	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004387

Deuteranopia (green-blind)

#003983

Tritanopia (blue-blind)

#004B58

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1f3884;
/* rgb */ color: rgb(31, 56, 132);
/* oklch */ color: oklch(37.0% 0.131 266.2);

Tailwind

colors: {
  custom: {
    50: '#6a6ea8',
    500: '#1f3884',
    950: '#000000',
  },
}

SCSS

$custom: #1f3884;
$custom-light: #6a6ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3884",
  "rgb": {
    "r": 31,
    "g": 56,
    "b": 132
  },
  "hsl": {
    "h": 225.149,
    "s": 61.963,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37009,
    "c": 0.13147,
    "h": 266.2
  },
  "luminance": 0.04786
}

Semantic roles & 50–950 ramp

primary

#1F3884

secondary

#B79B48

accent

#BD43E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1F3884

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

Preview Lab → · Contrast checker → · Palette generator →