#1F3D84#1F3D84

#1F3D84 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.1% C 0.125 H 264.1°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#1F3D84
RGB	rgb(31, 61, 132)
HSL	hsl(222, 62%, 32%)
HSV	hsv(222, 77%, 52%)
CMYK	cmyk(76.5%, 53.8%, 0%, 48.2%)
CIE-LAB	lab(27.56, 15.64, -43.16)
CIE-LCH	lch(27.56, 45.91, 289.92°)
OKLab	oklab(38.1% -0.0128 -0.1242)
OKLCH	oklch(38.1% 0.125 264.1)
XYZ	xyz(6.3972, 5.2940, 22.5100)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3D84 #84661F

analogous

#1F7084 #1F3D84 #341F84

triadic

#1F3D84 #841F3D #3D841F

tetradic

#1F3D84 #841F70 #84661F #1F8434

square

#1F3D84 #841F70 #84661F #1F8434

split-complementary

#1F3D84 #84341F #70841F

monochromatic

#080F21 #132652 #1F3D84 #2B54B6 #4972D4

Accessibility & contrast

On white

10.20

#1F3D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1F3D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3D84

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3D84	#FFFFFF	#000000	##FFFFFF
##1F3D84	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D4687

Deuteranopia (green-blind)

#003D83

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f3d84;
/* rgb */ color: rgb(31, 61, 132);
/* oklch */ color: oklch(38.1% 0.125 264.1);

Tailwind

colors: {
  custom: {
    50: '#6a72a8',
    500: '#1f3d84',
    950: '#000000',
  },
}

SCSS

$custom: #1f3d84;
$custom-light: #6a72a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3d84",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 132
  },
  "hsl": {
    "h": 222.178,
    "s": 61.963,
    "l": 31.961
  },
  "oklch": {
    "l": 0.381,
    "c": 0.12487,
    "h": 264.1
  },
  "luminance": 0.05295
}

Semantic roles & 50–950 ramp

primary

#1F3D84

secondary

#B79648

accent

#B543E5

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1F3D84

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

Preview Lab → · Contrast checker → · Palette generator →