#1F335D#1F335D

#1F335D is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.8% C 0.079 H 263.5°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F335D
RGB	rgb(31, 51, 93)
HSL	hsl(221, 50%, 24%)
HSV	hsv(221, 67%, 36%)
CMYK	cmyk(66.7%, 45.2%, 0%, 63.5%)
CIE-LAB	lab(21.76, 7.07, -27.55)
CIE-LCH	lch(21.76, 28.44, 284.39°)
OKLab	oklab(32.78% -0.009 -0.0785)
OKLCH	oklch(32.78% 0.079 263.5)
XYZ	xyz(3.7240, 3.4489, 10.8233)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F335D #5D491F

analogous

#1F525D #1F335D #2A1F5D

triadic

#1F335D #5D1F33 #335D1F

tetradic

#1F335D #5D1F52 #5D491F #1F5D2A

square

#1F335D #5D1F52 #5D491F #1F5D2A

split-complementary

#1F335D #5D2A1F #525D1F

monochromatic

#080D17 #101A2F #1F335D #2E4C8B #3E65B9

Accessibility & contrast

On white

12.43

#1F335D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F335D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F335D

12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F335D	#FFFFFF	#000000	##FFFFFF
##1F335D	1.00	12.43	1.69	12.43
#FFFFFF	12.43	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20375F

Deuteranopia (green-blind)

#17315C

Tritanopia (blue-blind)

#003C43

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f335d;
/* rgb */ color: rgb(31, 51, 93);
/* oklch */ color: oklch(32.8% 0.079 263.5);

Tailwind

colors: {
  custom: {
    50: '#616a8b',
    500: '#1f335d',
    950: '#000000',
  },
}

SCSS

$custom: #1f335d;
$custom-light: #616a8b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f335d",
  "rgb": {
    "r": 31,
    "g": 51,
    "b": 93
  },
  "hsl": {
    "h": 220.645,
    "s": 50,
    "l": 24.314
  },
  "oklch": {
    "l": 0.32785,
    "c": 0.07897,
    "h": 263.5
  },
  "luminance": 0.03449
}

Semantic roles & 50–950 ramp

primary

#1F335D

secondary

#927946

accent

#AD4EDA

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05060C

muted

#7A7A7D

Preview Lab

Preview with #1F335D

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

Preview Lab → · Contrast checker → · Palette generator →