#1F396F#1F396F

#1F396F is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.5% C 0.099 H 263.0°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#1F396F
RGB	rgb(31, 57, 111)
HSL	hsl(221, 56%, 28%)
HSV	hsv(221, 72%, 44%)
CMYK	cmyk(72.1%, 48.6%, 0%, 56.5%)
CIE-LAB	lab(24.84, 10.00, -34.28)
CIE-LCH	lch(24.84, 35.71, 286.26°)
OKLab	oklab(35.55% -0.012 -0.0981)
OKLCH	oklch(35.55% 0.099 263)
XYZ	xyz(4.8964, 4.3648, 15.6203)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F396F #6F551F

analogous

#1F616F #1F396F #2D1F6F

triadic

#1F396F #6F1F39 #396F1F

tetradic

#1F396F #6F1F61 #6F551F #1F6F2D

square

#1F396F #6F1F61 #6F551F #1F6F2D

split-complementary

#1F396F #6F2D1F #616F1F

monochromatic

#070C18 #12203F #1F396F #2C529F #3F6CC9

Accessibility & contrast

On white

11.21

#1F396F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1F396F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F396F

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F396F	#FFFFFF	#000000	##FFFFFF
##1F396F	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D3F71

Deuteranopia (green-blind)

#0D386E

Tritanopia (blue-blind)

#00464E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f396f;
/* rgb */ color: rgb(31, 57, 111);
/* oklch */ color: oklch(35.5% 0.099 263.0);

Tailwind

colors: {
  custom: {
    50: '#656e99',
    500: '#1f396f',
    950: '#000000',
  },
}

SCSS

$custom: #1f396f;
$custom-light: #656e99;
$custom-dark: #000000;

JSON

{
  "hex": "#1f396f",
  "rgb": {
    "r": 31,
    "g": 57,
    "b": 111
  },
  "hsl": {
    "h": 220.5,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.35545,
    "c": 0.09889,
    "h": 263
  },
  "luminance": 0.04365
}

Semantic roles & 50–950 ramp

primary

#1F396F

secondary

#A38547

accent

#AE48E0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1F396F

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

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