#1F2580#1F2580

#1F2580 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.9% C 0.150 H 271.9°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#1F2580
RGB	rgb(31, 37, 128)
HSL	hsl(236, 61%, 31%)
HSV	hsv(236, 76%, 50%)
CMYK	cmyk(75.8%, 71.1%, 0%, 49.8%)
CIE-LAB	lab(20.72, 30.57, -51.80)
CIE-LCH	lch(20.72, 60.15, 300.55°)
OKLab	oklab(32.92% 0.005 -0.1498)
OKLCH	oklch(32.92% 0.15 271.9)
XYZ	xyz(5.1216, 3.1724, 20.7603)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2580 #807A1F

analogous

#1F5580 #1F2580 #491F80

triadic

#1F2580 #801F25 #25801F

tetradic

#1F2580 #801F55 #807A1F #1F8049

square

#1F2580 #801F55 #807A1F #1F8049

split-complementary

#1F2580 #80491F #55801F

monochromatic

#07091D #13174F #1F2580 #2B33B1 #4750D2

Accessibility & contrast

On white

12.85

#1F2580 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1F2580 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2580

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2580	#FFFFFF	#000000	##FFFFFF
##1F2580	1.00	12.85	1.63	12.85
#FFFFFF	12.85	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003683

Deuteranopia (green-blind)

#002D7E

Tritanopia (blue-blind)

#003E4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f2580;
/* rgb */ color: rgb(31, 37, 128);
/* oklch */ color: oklch(32.9% 0.150 271.9);

Tailwind

colors: {
  custom: {
    50: '#6b60a6',
    500: '#1f2580',
    950: '#000000',
  },
}

SCSS

$custom: #1f2580;
$custom-light: #6b60a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2580",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 128
  },
  "hsl": {
    "h": 236.289,
    "s": 61.006,
    "l": 31.176
  },
  "oklch": {
    "l": 0.32915,
    "c": 0.14991,
    "h": 271.9
  },
  "luminance": 0.03173
}

Semantic roles & 50–950 ramp

primary

#1F2580

secondary

#B3AC48

accent

#DA44E4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08050F

muted

#7A797F

Preview Lab

Preview with #1F2580

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

Preview Lab → · Contrast checker → · Palette generator →