#1F3E99#1F3E99

#1F3E99 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.1% C 0.153 H 265.5°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E99
RGB	rgb(31, 62, 153)
HSL	hsl(225, 66%, 36%)
HSV	hsv(225, 80%, 60%)
CMYK	cmyk(79.7%, 59.5%, 0%, 40%)
CIE-LAB	lab(29.50, 23.32, -52.94)
CIE-LCH	lch(29.50, 57.85, 293.77°)
OKLab	oklab(40.09% -0.0121 -0.1529)
OKLCH	oklch(40.09% 0.153 265.5)
XYZ	xyz(8.0354, 6.0355, 30.8723)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E99 #997A1F

analogous

#1F7B99 #1F3E99 #3D1F99

triadic

#1F3E99 #991F3E #3E991F

tetradic

#1F3E99 #991F7B #997A1F #1F993D

square

#1F3E99 #991F7B #997A1F #1F993D

split-complementary

#1F3E99 #993D1F #7B991F

monochromatic

#0A1533 #152966 #1F3E99 #2953CC #5678DD

Accessibility & contrast

On white

9.51

#1F3E99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1F3E99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E99

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E99	#FFFFFF	#000000	##FFFFFF
##1F3E99	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9C

Deuteranopia (green-blind)

#004097

Tritanopia (blue-blind)

#005565

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f3e99;
/* rgb */ color: rgb(31, 62, 153);
/* oklch */ color: oklch(40.1% 0.153 265.5);

Tailwind

colors: {
  custom: {
    50: '#6f72b8',
    500: '#1f3e99',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e99;
$custom-light: #6f72b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e99",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 153
  },
  "hsl": {
    "h": 224.754,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.4009,
    "c": 0.15342,
    "h": 265.5
  },
  "luminance": 0.06036
}

Semantic roles & 50–950 ramp

primary

#1F3E99

secondary

#C0A554

accent

#BE3FE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F3E99

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

Preview Lab → · Contrast checker → · Palette generator →