#1F3372#1F3372

#1F3372 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.4% C 0.112 H 267.1°. Best body text is #FFFFFF at 11.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F3372
RGB	rgb(31, 51, 114)
HSL	hsl(226, 57%, 28%)
HSV	hsv(226, 73%, 45%)
CMYK	cmyk(72.8%, 55.3%, 0%, 55.3%)
CIE-LAB	lab(23.25, 15.45, -38.77)
CIE-LCH	lch(23.25, 41.73, 291.73°)
OKLab	oklab(34.4% -0.0057 -0.1115)
OKLCH	oklch(34.4% 0.112 267.1)
XYZ	xyz(4.7851, 3.8734, 16.4118)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3372 #725E1F

analogous

#1F5C72 #1F3372 #341F72

triadic

#1F3372 #721F33 #33721F

tetradic

#1F3372 #721F5C #725E1F #1F7234

square

#1F3372 #721F5C #725E1F #1F7234

split-complementary

#1F3372 #72341F #5C721F

monochromatic

#070B18 #121D42 #1F3372 #2C49A2 #4062CB

Accessibility & contrast

On white

11.83

#1F3372 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1F3372 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3372

11.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3372	#FFFFFF	#000000	##FFFFFF
##1F3372	1.00	11.83	1.77	11.83
#FFFFFF	11.83	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#083B74

Deuteranopia (green-blind)

#003471

Tritanopia (blue-blind)

#00424D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f3372;
/* rgb */ color: rgb(31, 51, 114);
/* oklch */ color: oklch(34.4% 0.112 267.1);

Tailwind

colors: {
  custom: {
    50: '#666a9b',
    500: '#1f3372',
    950: '#000000',
  },
}

SCSS

$custom: #1f3372;
$custom-light: #666a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3372",
  "rgb": {
    "r": 31,
    "g": 51,
    "b": 114
  },
  "hsl": {
    "h": 225.542,
    "s": 57.241,
    "l": 28.431
  },
  "oklch": {
    "l": 0.344,
    "c": 0.11161,
    "h": 267.1
  },
  "luminance": 0.03874
}

Semantic roles & 50–950 ramp

primary

#1F3372

secondary

#A68F47

accent

#BC47E0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1F3372

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

Preview Lab → · Contrast checker → · Palette generator →