#1F2D79#1F2D79

#1F2D79 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.7% C 0.130 H 269.9°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#1F2D79
RGB	rgb(31, 45, 121)
HSL	hsl(231, 59%, 30%)
HSV	hsv(231, 74%, 47%)
CMYK	cmyk(74.4%, 62.8%, 0%, 52.5%)
CIE-LAB	lab(22.12, 22.47, -45.07)
CIE-LCH	lch(22.12, 50.36, 296.49°)
OKLab	oklab(33.73% -0.0002 -0.1301)
OKLCH	oklch(33.73% 0.13 269.9)
XYZ	xyz(4.9535, 3.5481, 18.5092)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2D79 #796B1F

analogous

#1F5A79 #1F2D79 #3E1F79

triadic

#1F2D79 #791F2D #2D791F

tetradic

#1F2D79 #791F5A #796B1F #1F793E

square

#1F2D79 #791F5A #796B1F #1F793E

split-complementary

#1F2D79 #793E1F #5A791F

monochromatic

#060918 #131B48 #1F2D79 #2B3FAA #4359CF

Accessibility & contrast

On white

12.28

#1F2D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1F2D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2D79

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2D79	#FFFFFF	#000000	##FFFFFF
##1F2D79	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397C

Deuteranopia (green-blind)

#003178

Tritanopia (blue-blind)

#00404E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2d79;
/* rgb */ color: rgb(31, 45, 121);
/* oklch */ color: oklch(33.7% 0.130 269.9);

Tailwind

colors: {
  custom: {
    50: '#6865a0',
    500: '#1f2d79',
    950: '#000000',
  },
}

SCSS

$custom: #1f2d79;
$custom-light: #6865a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2d79",
  "rgb": {
    "r": 31,
    "g": 45,
    "b": 121
  },
  "hsl": {
    "h": 230.667,
    "s": 59.211,
    "l": 29.804
  },
  "oklch": {
    "l": 0.33734,
    "c": 0.13008,
    "h": 269.9
  },
  "luminance": 0.03549
}

Semantic roles & 50–950 ramp

primary

#1F2D79

secondary

#AC9D47

accent

#CA45E2

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07050F

muted

#7A7A7E

Preview Lab

Preview with #1F2D79

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

Preview Lab → · Contrast checker → · Palette generator →