#1F2C79#1F2C79

#1F2C79 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.5% C 0.131 H 270.3°. Best body text is #FFFFFF at 12.39:1 contrast (WCAG AA passes).

Color values

HEX	#1F2C79
RGB	rgb(31, 44, 121)
HSL	hsl(231, 59%, 30%)
HSV	hsv(231, 74%, 47%)
CMYK	cmyk(74.4%, 63.6%, 0%, 52.5%)
CIE-LAB	lab(21.85, 23.16, -45.52)
CIE-LCH	lch(21.85, 51.07, 296.97°)
OKLab	oklab(33.53% 0.0006 -0.1314)
OKLCH	oklch(33.53% 0.131 270.3)
XYZ	xyz(4.9158, 3.4726, 18.4967)
Luminance	0.0347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2C79 #796C1F

analogous

#1F5979 #1F2C79 #3F1F79

triadic

#1F2C79 #791F2C #2C791F

tetradic

#1F2C79 #791F59 #796C1F #1F793F

square

#1F2C79 #791F59 #796C1F #1F793F

split-complementary

#1F2C79 #793F1F #59791F

monochromatic

#060918 #131A48 #1F2C79 #2B3EAA #4358CF

Accessibility & contrast

On white

12.39

#1F2C79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F2C79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2C79

12.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2C79	#FFFFFF	#000000	##FFFFFF
##1F2C79	1.00	12.39	1.69	12.39
#FFFFFF	12.39	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397C

Deuteranopia (green-blind)

#003078

Tritanopia (blue-blind)

#00404E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2c79;
/* rgb */ color: rgb(31, 44, 121);
/* oklch */ color: oklch(33.5% 0.131 270.3);

Tailwind

colors: {
  custom: {
    50: '#6965a0',
    500: '#1f2c79',
    950: '#000000',
  },
}

SCSS

$custom: #1f2c79;
$custom-light: #6965a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2c79",
  "rgb": {
    "r": 31,
    "g": 44,
    "b": 121
  },
  "hsl": {
    "h": 231.333,
    "s": 59.211,
    "l": 29.804
  },
  "oklch": {
    "l": 0.33532,
    "c": 0.13139,
    "h": 270.3
  },
  "luminance": 0.03473
}

Semantic roles & 50–950 ramp

primary

#1F2C79

secondary

#AC9E47

accent

#CC45E2

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07050F

muted

#7A7A7E

Preview Lab

Preview with #1F2C79

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

Preview Lab → · Contrast checker → · Palette generator →