#1F4791#1F4791

#1F4791 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.4% C 0.131 H 261.4°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#1F4791
RGB	rgb(31, 71, 145)
HSL	hsl(219, 65%, 35%)
HSV	hsv(219, 79%, 57%)
CMYK	cmyk(78.6%, 51%, 0%, 43.1%)
CIE-LAB	lab(31.44, 13.96, -44.91)
CIE-LCH	lch(31.44, 47.03, 287.27°)
OKLab	oklab(41.36% -0.0196 -0.1291)
OKLCH	oklch(41.36% 0.131 261.4)
XYZ	xyz(7.9273, 6.8412, 27.6853)
Luminance	0.0684 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4791 #91691F

analogous

#1F8091 #1F4791 #301F91

triadic

#1F4791 #911F47 #47911F

tetradic

#1F4791 #911F80 #91691F #1F9130

square

#1F4791 #911F80 #91691F #1F9130

split-complementary

#1F4791 #91301F #80911F

monochromatic

#09162C #142E5F #1F4791 #2A60C3 #5181DA

Accessibility & contrast

On white

8.87

#1F4791 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1F4791 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4791

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4791	#FFFFFF	#000000	##FFFFFF
##1F4791	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A5094

Deuteranopia (green-blind)

#004590

Tritanopia (blue-blind)

#005965

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f4791;
/* rgb */ color: rgb(31, 71, 145);
/* oklch */ color: oklch(41.4% 0.131 261.4);

Tailwind

colors: {
  custom: {
    50: '#6d79b2',
    500: '#1f4791',
    950: '#000000',
  },
}

SCSS

$custom: #1f4791;
$custom-light: #6d79b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4791",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 145
  },
  "hsl": {
    "h": 218.947,
    "s": 64.773,
    "l": 34.51
  },
  "oklch": {
    "l": 0.41364,
    "c": 0.13063,
    "h": 261.4
  },
  "luminance": 0.06842
}

Semantic roles & 50–950 ramp

primary

#1F4791

secondary

#BD964F

accent

#AD40E8

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4791

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

Preview Lab → · Contrast checker → · Palette generator →