#1F409E#1F409E

#1F409E is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.9% C 0.158 H 265.2°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#1F409E
RGB	rgb(31, 64, 158)
HSL	hsl(224, 67%, 37%)
HSV	hsv(224, 80%, 62%)
CMYK	cmyk(80.4%, 59.5%, 0%, 38%)
CIE-LAB	lab(30.46, 23.92, -54.41)
CIE-LCH	lch(30.46, 59.44, 293.73°)
OKLab	oklab(40.94% -0.0132 -0.1572)
OKLCH	oklch(40.94% 0.158 265.2)
XYZ	xyz(8.5678, 6.4257, 33.1299)
Luminance	0.0643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F409E #9E7D1F

analogous

#1F809E #1F409E #3D1F9E

triadic

#1F409E #9E1F40 #409E1F

tetradic

#1F409E #9E1F80 #9E7D1F #1F9E3D

square

#1F409E #9E1F80 #9E7D1F #1F9E3D

split-complementary

#1F409E #9E3D1F #809E1F

monochromatic

#0B1738 #152B6B #1F409E #2955D1 #597CDE

Accessibility & contrast

On white

9.19

#1F409E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1F409E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F409E

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F409E	#FFFFFF	#000000	##FFFFFF
##1F409E	1.00	9.19	2.29	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA1

Deuteranopia (green-blind)

#00429C

Tritanopia (blue-blind)

#005868

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f409e;
/* rgb */ color: rgb(31, 64, 158);
/* oklch */ color: oklch(40.9% 0.158 265.2);

Tailwind

colors: {
  custom: {
    50: '#7074bb',
    500: '#1f409e',
    950: '#000000',
  },
}

SCSS

$custom: #1f409e;
$custom-light: #7074bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f409e",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 158
  },
  "hsl": {
    "h": 224.409,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40938,
    "c": 0.15779,
    "h": 265.2
  },
  "luminance": 0.06427
}

Semantic roles & 50–950 ramp

primary

#1F409E

secondary

#C2A656

accent

#BD3EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F409E

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

Preview Lab → · Contrast checker → · Palette generator →