#1F408C#1F408C

#1F408C is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.4% C 0.133 H 263.7°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F408C
RGB	rgb(31, 64, 140)
HSL	hsl(222, 64%, 34%)
HSV	hsv(222, 78%, 55%)
CMYK	cmyk(77.9%, 54.3%, 0%, 45.1%)
CIE-LAB	lab(29.03, 16.77, -45.73)
CIE-LCH	lch(29.03, 48.71, 290.14°)
OKLab	oklab(39.41% -0.0145 -0.1317)
OKLCH	oklch(39.41% 0.133 263.7)
XYZ	xyz(7.1304, 5.8507, 25.5594)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F408C #8C6B1F

analogous

#1F768C #1F408C #341F8C

triadic

#1F408C #8C1F40 #408C1F

tetradic

#1F408C #8C1F76 #8C6B1F #1F8C34

square

#1F408C #8C1F76 #8C6B1F #1F8C34

split-complementary

#1F408C #8C341F #768C1F

monochromatic

#091228 #14295A #1F408C #2A57BE #4E77D8

Accessibility & contrast

On white

9.68

#1F408C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1F408C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F408C

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F408C	#FFFFFF	#000000	##FFFFFF
##1F408C	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#084A8F

Deuteranopia (green-blind)

#00408A

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f408c;
/* rgb */ color: rgb(31, 64, 140);
/* oklch */ color: oklch(39.4% 0.133 263.7);

Tailwind

colors: {
  custom: {
    50: '#6c74ae',
    500: '#1f408c',
    950: '#000000',
  },
}

SCSS

$custom: #1f408c;
$custom-light: #6c74ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f408c",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 140
  },
  "hsl": {
    "h": 221.835,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.39412,
    "c": 0.13251,
    "h": 263.7
  },
  "luminance": 0.05852
}

Semantic roles & 50–950 ramp

primary

#1F408C

secondary

#BB994C

accent

#B541E7

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1F408C

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

Preview Lab → · Contrast checker → · Palette generator →