#1F409A#1F409A

#1F409A is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.6% C 0.152 H 264.9°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F409A
RGB	rgb(31, 64, 154)
HSL	hsl(224, 66%, 36%)
HSV	hsv(224, 80%, 60%)
CMYK	cmyk(79.9%, 58.4%, 0%, 39.6%)
CIE-LAB	lab(30.13, 22.34, -52.52)
CIE-LCH	lch(30.13, 57.08, 293.05°)
OKLab	oklab(40.59% -0.0134 -0.1517)
OKLCH	oklch(40.59% 0.152 264.9)
XYZ	xyz(8.2291, 6.2902, 31.3460)
Luminance	0.0629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F409A #9A791F

analogous

#1F7E9A #1F409A #3C1F9A

triadic

#1F409A #9A1F40 #409A1F

tetradic

#1F409A #9A1F7E #9A791F #1F9A3C

square

#1F409A #9A1F7E #9A791F #1F9A3C

split-complementary

#1F409A #9A3C1F #7E9A1F

monochromatic

#0A1634 #152B67 #1F409A #2955CD #567ADD

Accessibility & contrast

On white

9.30

#1F409A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1F409A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F409A

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F409A	#FFFFFF	#000000	##FFFFFF
##1F409A	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9D

Deuteranopia (green-blind)

#004198

Tritanopia (blue-blind)

#005766

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f409a;
/* rgb */ color: rgb(31, 64, 154);
/* oklch */ color: oklch(40.6% 0.152 264.9);

Tailwind

colors: {
  custom: {
    50: '#6f74b9',
    500: '#1f409a',
    950: '#000000',
  },
}

SCSS

$custom: #1f409a;
$custom-light: #6f74b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f409a",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 154
  },
  "hsl": {
    "h": 223.902,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.40589,
    "c": 0.15226,
    "h": 264.9
  },
  "luminance": 0.06291
}

Semantic roles & 50–950 ramp

primary

#1F409A

secondary

#C1A454

accent

#BC3EE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F409A

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

Preview Lab → · Contrast checker → · Palette generator →