#1F3F93#1F3F93

#1F3F93 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.8% C 0.144 H 264.8°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#1F3F93
RGB	rgb(31, 63, 147)
HSL	hsl(223, 65%, 35%)
HSV	hsv(223, 79%, 58%)
CMYK	cmyk(78.9%, 57.1%, 0%, 42.4%)
CIE-LAB	lab(29.29, 20.26, -49.62)
CIE-LCH	lch(29.29, 53.59, 292.21°)
OKLab	oklab(39.78% -0.0131 -0.1432)
OKLCH	oklch(39.78% 0.144 264.8)
XYZ	xyz(7.6072, 5.9520, 28.3460)
Luminance	0.0595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3F93 #93731F

analogous

#1F7993 #1F3F93 #391F93

triadic

#1F3F93 #931F3F #3F931F

tetradic

#1F3F93 #931F79 #93731F #1F9339

square

#1F3F93 #931F79 #93731F #1F9339

split-complementary

#1F3F93 #93391F #79931F

monochromatic

#0A142E #142960 #1F3F93 #2A55C6 #5278DA

Accessibility & contrast

On white

9.59

#1F3F93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1F3F93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3F93

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3F93	#FFFFFF	#000000	##FFFFFF
##1F3F93	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B96

Deuteranopia (green-blind)

#004091

Tritanopia (blue-blind)

#005462

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f3f93;
/* rgb */ color: rgb(31, 63, 147);
/* oklch */ color: oklch(39.8% 0.144 264.8);

Tailwind

colors: {
  custom: {
    50: '#6e73b3',
    500: '#1f3f93',
    950: '#000000',
  },
}

SCSS

$custom: #1f3f93;
$custom-light: #6e73b3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3f93",
  "rgb": {
    "r": 31,
    "g": 63,
    "b": 147
  },
  "hsl": {
    "h": 223.448,
    "s": 65.169,
    "l": 34.902
  },
  "oklch": {
    "l": 0.39779,
    "c": 0.14376,
    "h": 264.8
  },
  "luminance": 0.05953
}

Semantic roles & 50–950 ramp

primary

#1F3F93

secondary

#BE9F50

accent

#BA40E8

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F3F93

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

Preview Lab → · Contrast checker → · Palette generator →