#1F346B#1F346B

#1F346B is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.1% C 0.100 H 265.7°. Best body text is #FFFFFF at 11.92:1 contrast (WCAG AA passes).

Color values

HEX	#1F346B
RGB	rgb(31, 52, 107)
HSL	hsl(223, 55%, 27%)
HSV	hsv(223, 71%, 42%)
CMYK	cmyk(71%, 51.4%, 0%, 58%)
CIE-LAB	lab(23.03, 11.93, -34.63)
CIE-LCH	lch(23.03, 36.63, 289.01°)
OKLab	oklab(34.07% -0.0075 -0.0993)
OKLCH	oklch(34.07% 0.1 265.7)
XYZ	xyz(4.4460, 3.8084, 14.4079)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F346B #6B561F

analogous

#1F5A6B #1F346B #301F6B

triadic

#1F346B #6B1F34 #346B1F

tetradic

#1F346B #6B1F5A #6B561F #1F6B30

square

#1F346B #6B1F5A #6B561F #1F6B30

split-complementary

#1F346B #6B301F #5A6B1F

monochromatic

#070C18 #111D3C #1F346B #2D4B9A #3D63C7

Accessibility & contrast

On white

11.92

#1F346B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1F346B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F346B

11.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F346B	#FFFFFF	#000000	##FFFFFF
##1F346B	1.00	11.92	1.76	11.92
#FFFFFF	11.92	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#163B6D

Deuteranopia (green-blind)

#04346A

Tritanopia (blue-blind)

#00414A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f346b;
/* rgb */ color: rgb(31, 52, 107);
/* oklch */ color: oklch(34.1% 0.100 265.7);

Tailwind

colors: {
  custom: {
    50: '#656b96',
    500: '#1f346b',
    950: '#000000',
  },
}

SCSS

$custom: #1f346b;
$custom-light: #656b96;
$custom-dark: #000000;

JSON

{
  "hex": "#1f346b",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 107
  },
  "hsl": {
    "h": 223.421,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.34066,
    "c": 0.09955,
    "h": 265.7
  },
  "luminance": 0.03809
}

Semantic roles & 50–950 ramp

primary

#1F346B

secondary

#9F8747

accent

#B549DE

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1F346B

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

Preview Lab → · Contrast checker → · Palette generator →