#1F4291#1F4291

#1F4291 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.3% C 0.137 H 263.5°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F4291
RGB	rgb(31, 66, 145)
HSL	hsl(222, 65%, 35%)
HSV	hsv(222, 79%, 57%)
CMYK	cmyk(78.6%, 54.5%, 0%, 43.1%)
CIE-LAB	lab(29.99, 17.39, -47.26)
CIE-LCH	lch(29.99, 50.36, 290.20°)
OKLab	oklab(40.26% -0.0156 -0.1362)
OKLCH	oklch(40.26% 0.137 263.5)
XYZ	xyz(7.6223, 6.2312, 27.5836)
Luminance	0.0623 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4291 #916E1F

analogous

#1F7B91 #1F4291 #351F91

triadic

#1F4291 #911F42 #42911F

tetradic

#1F4291 #911F7B #916E1F #1F9135

square

#1F4291 #911F7B #916E1F #1F9135

split-complementary

#1F4291 #91351F #7B911F

monochromatic

#09142C #142B5F #1F4291 #2A59C3 #517BDA

Accessibility & contrast

On white

9.35

#1F4291 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1F4291 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4291

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4291	#FFFFFF	#000000	##FFFFFF
##1F4291	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#054C94

Deuteranopia (green-blind)

#00428F

Tritanopia (blue-blind)

#005563

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f4291;
/* rgb */ color: rgb(31, 66, 145);
/* oklch */ color: oklch(40.3% 0.137 263.5);

Tailwind

colors: {
  custom: {
    50: '#6d75b2',
    500: '#1f4291',
    950: '#000000',
  },
}

SCSS

$custom: #1f4291;
$custom-light: #6d75b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4291",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 145
  },
  "hsl": {
    "h": 221.579,
    "s": 64.773,
    "l": 34.51
  },
  "oklch": {
    "l": 0.40257,
    "c": 0.13706,
    "h": 263.5
  },
  "luminance": 0.06232
}

Semantic roles & 50–950 ramp

primary

#1F4291

secondary

#BD9B4F

accent

#B440E8

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4291

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

Preview Lab → · Contrast checker → · Palette generator →