#1F4197#1F4197

#1F4197 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.5% C 0.147 H 264.4°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#1F4197
RGB	rgb(31, 65, 151)
HSL	hsl(223, 66%, 36%)
HSV	hsv(223, 79%, 59%)
CMYK	cmyk(79.5%, 57%, 0%, 40.8%)
CIE-LAB	lab(30.17, 20.47, -50.63)
CIE-LCH	lch(30.17, 54.62, 292.01°)
OKLab	oklab(40.54% -0.0143 -0.1461)
OKLCH	oklch(40.54% 0.147 264.4)
XYZ	xyz(8.0393, 6.3053, 30.0655)
Luminance	0.0631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4197 #97751F

analogous

#1F7D97 #1F4197 #391F97

triadic

#1F4197 #971F41 #41971F

tetradic

#1F4197 #971F7D #97751F #1F9739

square

#1F4197 #971F7D #97751F #1F9739

split-complementary

#1F4197 #97391F #7D971F

monochromatic

#0A1531 #152B64 #1F4197 #2957CA #547BDC

Accessibility & contrast

On white

9.29

#1F4197 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1F4197 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4197

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4197	#FFFFFF	#000000	##FFFFFF
##1F4197	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9A

Deuteranopia (green-blind)

#004295

Tritanopia (blue-blind)

#005665

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f4197;
/* rgb */ color: rgb(31, 65, 151);
/* oklch */ color: oklch(40.5% 0.147 264.4);

Tailwind

colors: {
  custom: {
    50: '#6f75b6',
    500: '#1f4197',
    950: '#000000',
  },
}

SCSS

$custom: #1f4197;
$custom-light: #6f75b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4197",
  "rgb": {
    "r": 31,
    "g": 65,
    "b": 151
  },
  "hsl": {
    "h": 223,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.40541,
    "c": 0.14681,
    "h": 264.4
  },
  "luminance": 0.06306
}

Semantic roles & 50–950 ramp

primary

#1F4197

secondary

#BFA152

accent

#B93FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4197

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

Preview Lab → · Contrast checker → · Palette generator →