#1F3984#1F3984

#1F3984 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.2% C 0.130 H 265.8°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#1F3984
RGB	rgb(31, 57, 132)
HSL	hsl(225, 62%, 32%)
HSV	hsv(225, 77%, 52%)
CMYK	cmyk(76.5%, 56.8%, 0%, 48.2%)
CIE-LAB	lab(26.40, 18.43, -45.04)
CIE-LCH	lch(26.40, 48.66, 292.26°)
OKLab	oklab(37.22% -0.0095 -0.1298)
OKLCH	oklch(37.22% 0.13 265.8)
XYZ	xyz(6.1916, 4.8828, 22.4415)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3984 #846A1F

analogous

#1F6C84 #1F3984 #371F84

triadic

#1F3984 #841F39 #39841F

tetradic

#1F3984 #841F6C #846A1F #1F8437

square

#1F3984 #841F6C #846A1F #1F8437

split-complementary

#1F3984 #84371F #6C841F

monochromatic

#080E21 #132452 #1F3984 #2B4EB6 #496DD4

Accessibility & contrast

On white

10.62

#1F3984 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1F3984 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3984

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3984	#FFFFFF	#000000	##FFFFFF
##1F3984	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004387

Deuteranopia (green-blind)

#003A83

Tritanopia (blue-blind)

#004B58

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1f3984;
/* rgb */ color: rgb(31, 57, 132);
/* oklch */ color: oklch(37.2% 0.130 265.8);

Tailwind

colors: {
  custom: {
    50: '#6a6ea8',
    500: '#1f3984',
    950: '#000000',
  },
}

SCSS

$custom: #1f3984;
$custom-light: #6a6ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3984",
  "rgb": {
    "r": 31,
    "g": 57,
    "b": 132
  },
  "hsl": {
    "h": 224.554,
    "s": 61.963,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37223,
    "c": 0.13015,
    "h": 265.8
  },
  "luminance": 0.04884
}

Semantic roles & 50–950 ramp

primary

#1F3984

secondary

#B79A48

accent

#BB43E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1F3984

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

Preview Lab → · Contrast checker → · Palette generator →