#1F356A#1F356A

#1F356A is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.2% C 0.097 H 264.8°. Best body text is #FFFFFF at 11.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F356A
RGB	rgb(31, 53, 106)
HSL	hsl(222, 55%, 27%)
HSV	hsv(222, 71%, 42%)
CMYK	cmyk(70.8%, 50%, 0%, 58.4%)
CIE-LAB	lab(23.26, 10.82, -33.60)
CIE-LCH	lch(23.26, 35.30, 287.85°)
OKLab	oklab(34.22% -0.0087 -0.0962)
OKLCH	oklch(34.22% 0.097 264.8)
XYZ	xyz(4.4388, 3.8777, 14.1474)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F356A #6A541F

analogous

#1F5B6A #1F356A #2F1F6A

triadic

#1F356A #6A1F35 #356A1F

tetradic

#1F356A #6A1F5B #6A541F #1F6A2F

square

#1F356A #6A1F5B #6A541F #1F6A2F

split-complementary

#1F356A #6A2F1F #5B6A1F

monochromatic

#070C18 #111D3B #1F356A #2D4D99 #3D65C6

Accessibility & contrast

On white

11.83

#1F356A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1F356A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F356A

11.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F356A	#FFFFFF	#000000	##FFFFFF
##1F356A	1.00	11.83	1.78	11.83
#FFFFFF	11.83	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A3B6C

Deuteranopia (green-blind)

#093469

Tritanopia (blue-blind)

#00414A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f356a;
/* rgb */ color: rgb(31, 53, 106);
/* oklch */ color: oklch(34.2% 0.097 264.8);

Tailwind

colors: {
  custom: {
    50: '#646b95',
    500: '#1f356a',
    950: '#000000',
  },
}

SCSS

$custom: #1f356a;
$custom-light: #646b95;
$custom-dark: #000000;

JSON

{
  "hex": "#1f356a",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 106
  },
  "hsl": {
    "h": 222.4,
    "s": 54.745,
    "l": 26.863
  },
  "oklch": {
    "l": 0.34223,
    "c": 0.09663,
    "h": 264.8
  },
  "luminance": 0.03878
}

Semantic roles & 50–950 ramp

primary

#1F356A

secondary

#9E8547

accent

#B34ADE

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1F356A

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

Preview Lab → · Contrast checker → · Palette generator →