#1F368C#1F368C

#1F368C is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.145 H 267.3°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#1F368C
RGB	rgb(31, 54, 140)
HSL	hsl(227, 64%, 34%)
HSV	hsv(227, 78%, 55%)
CMYK	cmyk(77.9%, 61.4%, 0%, 45.1%)
CIE-LAB	lab(26.22, 23.69, -50.30)
CIE-LCH	lch(26.22, 55.60, 295.22°)
OKLab	oklab(37.3% -0.0069 -0.1453)
OKLCH	oklch(37.3% 0.145 267.3)
XYZ	xyz(6.6162, 4.8224, 25.3880)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F368C #8C751F

analogous

#1F6C8C #1F368C #3E1F8C

triadic

#1F368C #8C1F36 #368C1F

tetradic

#1F368C #8C1F6C #8C751F #1F8C3E

square

#1F368C #8C1F6C #8C751F #1F8C3E

split-complementary

#1F368C #8C3E1F #6C8C1F

monochromatic

#090F28 #14235A #1F368C #2A49BE #4E6BD8

Accessibility & contrast

On white

10.69

#1F368C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1F368C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F368C

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F368C	#FFFFFF	#000000	##FFFFFF
##1F368C	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438F

Deuteranopia (green-blind)

#00398A

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1f368c;
/* rgb */ color: rgb(31, 54, 140);
/* oklch */ color: oklch(37.3% 0.145 267.3);

Tailwind

colors: {
  custom: {
    50: '#6d6cae',
    500: '#1f368c',
    950: '#000000',
  },
}

SCSS

$custom: #1f368c;
$custom-light: #6d6cae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f368c",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 140
  },
  "hsl": {
    "h": 227.339,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.37299,
    "c": 0.14547,
    "h": 267.3
  },
  "luminance": 0.04823
}

Semantic roles & 50–950 ramp

primary

#1F368C

secondary

#BBA34C

accent

#C441E7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1F368C

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

Preview Lab → · Contrast checker → · Palette generator →