#1F3796#1F3796

#1F3796 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.4% C 0.158 H 267.3°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F3796
RGB	rgb(31, 55, 150)
HSL	hsl(228, 66%, 35%)
HSV	hsv(228, 79%, 59%)
CMYK	cmyk(79.3%, 63.3%, 0%, 41.2%)
CIE-LAB	lab(27.37, 26.91, -54.59)
CIE-LCH	lch(27.37, 60.87, 296.24°)
OKLab	oklab(38.42% -0.0075 -0.1579)
OKLCH	oklch(38.42% 0.158 267.3)
XYZ	xyz(7.4344, 5.2248, 29.4649)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3796 #967E1F

analogous

#1F7296 #1F3796 #421F96

triadic

#1F3796 #961F37 #37961F

tetradic

#1F3796 #961F72 #967E1F #1F9642

square

#1F3796 #961F72 #967E1F #1F9642

split-complementary

#1F3796 #96421F #72961F

monochromatic

#0A1231 #152463 #1F3796 #294AC9 #546FDC

Accessibility & contrast

On white

10.27

#1F3796 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1F3796 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3796

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3796	#FFFFFF	#000000	##FFFFFF
##1F3796	1.00	10.27	2.05	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004699

Deuteranopia (green-blind)

#003B94

Tritanopia (blue-blind)

#005061

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f3796;
/* rgb */ color: rgb(31, 55, 150);
/* oklch */ color: oklch(38.4% 0.158 267.3);

Tailwind

colors: {
  custom: {
    50: '#6f6db6',
    500: '#1f3796',
    950: '#000000',
  },
}

SCSS

$custom: #1f3796;
$custom-light: #6f6db6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3796",
  "rgb": {
    "r": 31,
    "g": 55,
    "b": 150
  },
  "hsl": {
    "h": 227.899,
    "s": 65.746,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38419,
    "c": 0.15807,
    "h": 267.3
  },
  "luminance": 0.05226
}

Semantic roles & 50–950 ramp

primary

#1F3796

secondary

#BFA952

accent

#C63FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1F3796

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

Preview Lab → · Contrast checker → · Palette generator →