#1F4191#1F4191

#1F4191 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.0% C 0.138 H 263.9°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#1F4191
RGB	rgb(31, 65, 145)
HSL	hsl(222, 65%, 35%)
HSV	hsv(222, 79%, 57%)
CMYK	cmyk(78.6%, 55.2%, 0%, 43.1%)
CIE-LAB	lab(29.70, 18.08, -47.72)
CIE-LCH	lch(29.70, 51.03, 290.75°)
OKLab	oklab(40.04% -0.0148 -0.1376)
OKLCH	oklch(40.04% 0.138 263.9)
XYZ	xyz(7.5644, 6.1154, 27.5643)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4191 #916F1F

analogous

#1F7A91 #1F4191 #361F91

triadic

#1F4191 #911F41 #41911F

tetradic

#1F4191 #911F7A #916F1F #1F9136

square

#1F4191 #911F7A #916F1F #1F9136

split-complementary

#1F4191 #91361F #7A911F

monochromatic

#09142C #142A5F #1F4191 #2A58C3 #517ADA

Accessibility & contrast

On white

9.45

#1F4191 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1F4191 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4191

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4191	#FFFFFF	#000000	##FFFFFF
##1F4191	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B94

Deuteranopia (green-blind)

#00418F

Tritanopia (blue-blind)

#005562

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f4191;
/* rgb */ color: rgb(31, 65, 145);
/* oklch */ color: oklch(40.0% 0.138 263.9);

Tailwind

colors: {
  custom: {
    50: '#6d75b2',
    500: '#1f4191',
    950: '#000000',
  },
}

SCSS

$custom: #1f4191;
$custom-light: #6d75b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4191",
  "rgb": {
    "r": 31,
    "g": 65,
    "b": 145
  },
  "hsl": {
    "h": 222.105,
    "s": 64.773,
    "l": 34.51
  },
  "oklch": {
    "l": 0.4004,
    "c": 0.13835,
    "h": 263.9
  },
  "luminance": 0.06116
}

Semantic roles & 50–950 ramp

primary

#1F4191

secondary

#BD9C4F

accent

#B640E8

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4191

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

Preview Lab → · Contrast checker → · Palette generator →