#1F3F86#1F3F86

#1F3F86 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.7% C 0.125 H 263.4°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#1F3F86
RGB	rgb(31, 63, 134)
HSL	hsl(221, 62%, 32%)
HSV	hsv(221, 77%, 53%)
CMYK	cmyk(76.9%, 53%, 0%, 47.5%)
CIE-LAB	lab(28.29, 15.05, -43.22)
CIE-LCH	lch(28.29, 45.76, 289.21°)
OKLab	oklab(38.71% -0.0143 -0.1243)
OKLCH	oklch(38.71% 0.125 263.4)
XYZ	xyz(6.6441, 5.5668, 23.2740)
Luminance	0.0557 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3F86 #86661F

analogous

#1F7386 #1F3F86 #321F86

triadic

#1F3F86 #861F3F #3F861F

tetradic

#1F3F86 #861F73 #86661F #1F8632

square

#1F3F86 #861F73 #86661F #1F8632

split-complementary

#1F3F86 #86321F #73861F

monochromatic

#081023 #142854 #1F3F86 #2A56B8 #4A75D5

Accessibility & contrast

On white

9.94

#1F3F86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1F3F86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3F86

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3F86	#FFFFFF	#000000	##FFFFFF
##1F3F86	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114889

Deuteranopia (green-blind)

#003E85

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f3f86;
/* rgb */ color: rgb(31, 63, 134);
/* oklch */ color: oklch(38.7% 0.125 263.4);

Tailwind

colors: {
  custom: {
    50: '#6a73aa',
    500: '#1f3f86',
    950: '#000000',
  },
}

SCSS

$custom: #1f3f86;
$custom-light: #6a73aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3f86",
  "rgb": {
    "r": 31,
    "g": 63,
    "b": 134
  },
  "hsl": {
    "h": 221.359,
    "s": 62.424,
    "l": 32.353
  },
  "oklch": {
    "l": 0.38706,
    "c": 0.12515,
    "h": 263.4
  },
  "luminance": 0.05568
}

Semantic roles & 50–950 ramp

primary

#1F3F86

secondary

#B89549

accent

#B342E5

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1F3F86

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

Preview Lab → · Contrast checker → · Palette generator →