#1F2C72#1F2C72

#1F2C72 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.9% C 0.121 H 270.3°. Best body text is #FFFFFF at 12.64:1 contrast (WCAG AA passes).

Color values

HEX	#1F2C72
RGB	rgb(31, 44, 114)
HSL	hsl(231, 57%, 28%)
HSV	hsv(231, 73%, 45%)
CMYK	cmyk(72.8%, 61.4%, 0%, 55.3%)
CIE-LAB	lab(21.23, 20.42, -42.04)
CIE-LCH	lch(21.23, 46.73, 295.91°)
OKLab	oklab(32.89% 0.0006 -0.1212)
OKLCH	oklch(32.89% 0.121 270.3)
XYZ	xyz(4.5020, 3.3071, 16.3174)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2C72 #72651F

analogous

#1F5572 #1F2C72 #3B1F72

triadic

#1F2C72 #721F2C #2C721F

tetradic

#1F2C72 #721F55 #72651F #1F723B

square

#1F2C72 #721F55 #72651F #1F723B

split-complementary

#1F2C72 #723B1F #55721F

monochromatic

#070918 #121942 #1F2C72 #2C3FA2 #4056CB

Accessibility & contrast

On white

12.64

#1F2C72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1F2C72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2C72

12.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2C72	#FFFFFF	#000000	##FFFFFF
##1F2C72	1.00	12.64	1.66	12.64
#FFFFFF	12.64	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003774

Deuteranopia (green-blind)

#002F71

Tritanopia (blue-blind)

#003D4A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2c72;
/* rgb */ color: rgb(31, 44, 114);
/* oklch */ color: oklch(32.9% 0.121 270.3);

Tailwind

colors: {
  custom: {
    50: '#67649b',
    500: '#1f2c72',
    950: '#000000',
  },
}

SCSS

$custom: #1f2c72;
$custom-light: #67649b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2c72",
  "rgb": {
    "r": 31,
    "g": 44,
    "b": 114
  },
  "hsl": {
    "h": 230.602,
    "s": 57.241,
    "l": 28.431
  },
  "oklch": {
    "l": 0.32888,
    "c": 0.12118,
    "h": 270.3
  },
  "luminance": 0.03308
}

Semantic roles & 50–950 ramp

primary

#1F2C72

secondary

#A69747

accent

#C947E0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050E

muted

#7A7A7E

Preview Lab

Preview with #1F2C72

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

Preview Lab → · Contrast checker → · Palette generator →