#1F3794#1F3794

#1F3794 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.2% C 0.155 H 267.2°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F3794
RGB	rgb(31, 55, 148)
HSL	hsl(228, 65%, 35%)
HSV	hsv(228, 79%, 58%)
CMYK	cmyk(79.1%, 62.8%, 0%, 42%)
CIE-LAB	lab(27.19, 26.13, -53.66)
CIE-LCH	lch(27.19, 59.68, 295.97°)
OKLab	oklab(38.23% -0.0075 -0.1551)
OKLCH	oklch(38.23% 0.155 267.2)
XYZ	xyz(7.2747, 5.1610, 28.6240)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3794 #947C1F

analogous

#1F7294 #1F3794 #411F94

triadic

#1F3794 #941F37 #37941F

tetradic

#1F3794 #941F72 #947C1F #1F9441

square

#1F3794 #941F72 #947C1F #1F9441

split-complementary

#1F3794 #94411F #72941F

monochromatic

#0A112F #142461 #1F3794 #2A4AC7 #536EDB

Accessibility & contrast

On white

10.33

#1F3794 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1F3794 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3794

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3794	#FFFFFF	#000000	##FFFFFF
##1F3794	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004697

Deuteranopia (green-blind)

#003B92

Tritanopia (blue-blind)

#004F60

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f3794;
/* rgb */ color: rgb(31, 55, 148);
/* oklch */ color: oklch(38.2% 0.155 267.2);

Tailwind

colors: {
  custom: {
    50: '#6f6db4',
    500: '#1f3794',
    950: '#000000',
  },
}

SCSS

$custom: #1f3794;
$custom-light: #6f6db4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3794",
  "rgb": {
    "r": 31,
    "g": 55,
    "b": 148
  },
  "hsl": {
    "h": 227.692,
    "s": 65.363,
    "l": 35.098
  },
  "oklch": {
    "l": 0.38233,
    "c": 0.15532,
    "h": 267.2
  },
  "luminance": 0.05162
}

Semantic roles & 50–950 ramp

primary

#1F3794

secondary

#BEA851

accent

#C63FE8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1F3794

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

Preview Lab → · Contrast checker → · Palette generator →