#1F3463#1F3463

#1F3463 is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.5% C 0.087 H 264.1°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#1F3463
RGB	rgb(31, 52, 99)
HSL	hsl(221, 52%, 25%)
HSV	hsv(221, 69%, 39%)
CMYK	cmyk(68.7%, 47.5%, 0%, 61.2%)
CIE-LAB	lab(22.47, 8.73, -30.33)
CIE-LCH	lch(22.47, 31.57, 286.06°)
OKLab	oklab(33.46% -0.0089 -0.0866)
OKLCH	oklch(33.46% 0.087 264.1)
XYZ	xyz(4.0444, 3.6478, 12.2929)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3463 #634E1F

analogous

#1F5663 #1F3463 #2C1F63

triadic

#1F3463 #631F34 #34631F

tetradic

#1F3463 #631F56 #634E1F #1F632C

square

#1F3463 #631F56 #634E1F #1F632C

split-complementary

#1F3463 #632C1F #56631F

monochromatic

#070C17 #101C34 #1F3463 #2E4C92 #3C65C0

Accessibility & contrast

On white

12.14

#1F3463 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1F3463 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3463

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3463	#FFFFFF	#000000	##FFFFFF
##1F3463	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E3965

Deuteranopia (green-blind)

#123362

Tritanopia (blue-blind)

#003F46

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f3463;
/* rgb */ color: rgb(31, 52, 99);
/* oklch */ color: oklch(33.5% 0.087 264.1);

Tailwind

colors: {
  custom: {
    50: '#636b90',
    500: '#1f3463',
    950: '#000000',
  },
}

SCSS

$custom: #1f3463;
$custom-light: #636b90;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3463",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 99
  },
  "hsl": {
    "h": 221.471,
    "s": 52.308,
    "l": 25.49
  },
  "oklch": {
    "l": 0.33461,
    "c": 0.08708,
    "h": 264.1
  },
  "luminance": 0.03648
}

Semantic roles & 50–950 ramp

primary

#1F3463

secondary

#987E46

accent

#AF4CDC

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#06060C

muted

#7A7A7D

Preview Lab

Preview with #1F3463

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

Preview Lab → · Contrast checker → · Palette generator →