#1F347C#1F347C

#1F347C is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.5% C 0.125 H 267.3°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F347C
RGB	rgb(31, 52, 124)
HSL	hsl(226, 60%, 30%)
HSV	hsv(226, 75%, 49%)
CMYK	cmyk(75%, 58.1%, 0%, 51.4%)
CIE-LAB	lab(24.33, 18.74, -43.38)
CIE-LCH	lch(24.33, 47.25, 293.37°)
OKLab	oklab(35.46% -0.0059 -0.125)
OKLCH	oklch(35.46% 0.125 267.3)
XYZ	xyz(5.4299, 4.2020, 19.5898)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F347C #7C671F

analogous

#1F627C #1F347C #391F7C

triadic

#1F347C #7C1F34 #347C1F

tetradic

#1F347C #7C1F62 #7C671F #1F7C39

square

#1F347C #7C1F62 #7C671F #1F7C39

split-complementary

#1F347C #7C391F #627C1F

monochromatic

#070B1A #131F4B #1F347C #2B49AD #4564D0

Accessibility & contrast

On white

11.41

#1F347C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1F347C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F347C

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F347C	#FFFFFF	#000000	##FFFFFF
##1F347C	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7E

Deuteranopia (green-blind)

#00367B

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f347c;
/* rgb */ color: rgb(31, 52, 124);
/* oklch */ color: oklch(35.5% 0.125 267.3);

Tailwind

colors: {
  custom: {
    50: '#696ba2',
    500: '#1f347c',
    950: '#000000',
  },
}

SCSS

$custom: #1f347c;
$custom-light: #696ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f347c",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 124
  },
  "hsl": {
    "h": 226.452,
    "s": 60,
    "l": 30.392
  },
  "oklch": {
    "l": 0.35463,
    "c": 0.12514,
    "h": 267.3
  },
  "luminance": 0.04203
}

Semantic roles & 50–950 ramp

primary

#1F347C

secondary

#AF9848

accent

#BF45E3

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1F347C

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

Preview Lab → · Contrast checker → · Palette generator →