#1F2D78#1F2D78

#1F2D78 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.6% C 0.129 H 269.9°. Best body text is #FFFFFF at 12.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F2D78
RGB	rgb(31, 45, 120)
HSL	hsl(231, 59%, 30%)
HSV	hsv(231, 74%, 47%)
CMYK	cmyk(74.2%, 62.5%, 0%, 52.9%)
CIE-LAB	lab(22.03, 22.07, -44.58)
CIE-LCH	lch(22.03, 49.74, 296.34°)
OKLab	oklab(33.64% -0.0002 -0.1286)
OKLCH	oklch(33.64% 0.129 269.9)
XYZ	xyz(4.8925, 3.5236, 18.1880)
Luminance	0.0352 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2D78 #786A1F

analogous

#1F5A78 #1F2D78 #3E1F78

triadic

#1F2D78 #781F2D #2D781F

tetradic

#1F2D78 #781F5A #786A1F #1F783E

square

#1F2D78 #781F5A #786A1F #1F783E

split-complementary

#1F2D78 #783E1F #5A781F

monochromatic

#060918 #121B47 #1F2D78 #2C3FA9 #4359CE

Accessibility & contrast

On white

12.32

#1F2D78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F2D78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2D78

12.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2D78	#FFFFFF	#000000	##FFFFFF
##1F2D78	1.00	12.32	1.70	12.32
#FFFFFF	12.32	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397A

Deuteranopia (green-blind)

#003177

Tritanopia (blue-blind)

#00404E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2d78;
/* rgb */ color: rgb(31, 45, 120);
/* oklch */ color: oklch(33.6% 0.129 269.9);

Tailwind

colors: {
  custom: {
    50: '#6865a0',
    500: '#1f2d78',
    950: '#000000',
  },
}

SCSS

$custom: #1f2d78;
$custom-light: #6865a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2d78",
  "rgb": {
    "r": 31,
    "g": 45,
    "b": 120
  },
  "hsl": {
    "h": 230.562,
    "s": 58.94,
    "l": 29.608
  },
  "oklch": {
    "l": 0.33641,
    "c": 0.12863,
    "h": 269.9
  },
  "luminance": 0.03524
}

Semantic roles & 50–950 ramp

primary

#1F2D78

secondary

#AB9C47

accent

#CA46E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050F

muted

#7A7A7E

Preview Lab

Preview with #1F2D78

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

Preview Lab → · Contrast checker → · Palette generator →