#1F3F94#1F3F94

#1F3F94 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.9% C 0.145 H 264.8°. Best body text is #FFFFFF at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#1F3F94
RGB	rgb(31, 63, 148)
HSL	hsl(224, 65%, 35%)
HSV	hsv(224, 79%, 58%)
CMYK	cmyk(79.1%, 57.4%, 0%, 42%)
CIE-LAB	lab(29.37, 20.65, -50.10)
CIE-LCH	lch(29.37, 54.19, 292.40°)
OKLab	oklab(39.86% -0.013 -0.1446)
OKLCH	oklch(39.86% 0.145 264.8)
XYZ	xyz(7.6860, 5.9836, 28.7611)
Luminance	0.0598 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3F94 #94741F

analogous

#1F7994 #1F3F94 #3A1F94

triadic

#1F3F94 #941F3F #3F941F

tetradic

#1F3F94 #941F79 #94741F #1F943A

square

#1F3F94 #941F79 #94741F #1F943A

split-complementary

#1F3F94 #943A1F #79941F

monochromatic

#0A142F #142961 #1F3F94 #2A55C7 #5378DB

Accessibility & contrast

On white

9.56

#1F3F94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1F3F94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3F94

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3F94	#FFFFFF	#000000	##FFFFFF
##1F3F94	1.00	9.56	2.20	9.56
#FFFFFF	9.56	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B97

Deuteranopia (green-blind)

#004092

Tritanopia (blue-blind)

#005463

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f3f94;
/* rgb */ color: rgb(31, 63, 148);
/* oklch */ color: oklch(39.9% 0.145 264.8);

Tailwind

colors: {
  custom: {
    50: '#6e73b4',
    500: '#1f3f94',
    950: '#000000',
  },
}

SCSS

$custom: #1f3f94;
$custom-light: #6e73b4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3f94",
  "rgb": {
    "r": 31,
    "g": 63,
    "b": 148
  },
  "hsl": {
    "h": 223.59,
    "s": 65.363,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39864,
    "c": 0.14517,
    "h": 264.8
  },
  "luminance": 0.05984
}

Semantic roles & 50–950 ramp

primary

#1F3F94

secondary

#BEA051

accent

#BA3FE8

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F3F94

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

Preview Lab → · Contrast checker → · Palette generator →