#1F336F#1F336F

#1F336F is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.2% C 0.107 H 266.8°. Best body text is #FFFFFF at 11.92:1 contrast (WCAG AA passes).

Color values

HEX	#1F336F
RGB	rgb(31, 51, 111)
HSL	hsl(225, 56%, 28%)
HSV	hsv(225, 72%, 44%)
CMYK	cmyk(72.1%, 54.1%, 0%, 56.5%)
CIE-LAB	lab(23.02, 14.25, -37.21)
CIE-LCH	lch(23.02, 39.85, 290.95°)
OKLab	oklab(34.15% -0.006 -0.1069)
OKLCH	oklch(34.15% 0.107 266.8)
XYZ	xyz(4.6171, 3.8062, 15.5272)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F336F #6F5B1F

analogous

#1F5B6F #1F336F #331F6F

triadic

#1F336F #6F1F33 #336F1F

tetradic

#1F336F #6F1F5B #6F5B1F #1F6F33

square

#1F336F #6F1F5B #6F5B1F #1F6F33

split-complementary

#1F336F #6F331F #5B6F1F

monochromatic

#070B18 #121D3F #1F336F #2C499F #3F62C9

Accessibility & contrast

On white

11.92

#1F336F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1F336F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F336F

11.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F336F	#FFFFFF	#000000	##FFFFFF
##1F336F	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)

#0E3B71

Deuteranopia (green-blind)

#00336E

Tritanopia (blue-blind)

#00414B

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f336f;
/* rgb */ color: rgb(31, 51, 111);
/* oklch */ color: oklch(34.2% 0.107 266.8);

Tailwind

colors: {
  custom: {
    50: '#666a99',
    500: '#1f336f',
    950: '#000000',
  },
}

SCSS

$custom: #1f336f;
$custom-light: #666a99;
$custom-dark: #000000;

JSON

{
  "hex": "#1f336f",
  "rgb": {
    "r": 31,
    "g": 51,
    "b": 111
  },
  "hsl": {
    "h": 225,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.34154,
    "c": 0.10706,
    "h": 266.8
  },
  "luminance": 0.03807
}

Semantic roles & 50–950 ramp

primary

#1F336F

secondary

#A38C47

accent

#BA48E0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1F336F

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

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