#1F2980#1F2980

#1F2980 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.6% C 0.145 H 271.0°. Best body text is #FFFFFF at 12.45:1 contrast (WCAG AA passes).

Color values

HEX	#1F2980
RGB	rgb(31, 41, 128)
HSL	hsl(234, 61%, 31%)
HSV	hsv(234, 76%, 50%)
CMYK	cmyk(75.8%, 68%, 0%, 49.8%)
CIE-LAB	lab(21.71, 27.92, -50.18)
CIE-LCH	lch(21.71, 57.42, 299.09°)
OKLab	oklab(33.63% 0.0024 -0.1451)
OKLCH	oklch(33.63% 0.145 271)
XYZ	xyz(5.2530, 3.4351, 20.8041)
Luminance	0.0344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2980 #80761F

analogous

#1F5980 #1F2980 #451F80

triadic

#1F2980 #801F29 #29801F

tetradic

#1F2980 #801F59 #80761F #1F8045

square

#1F2980 #801F59 #80761F #1F8045

split-complementary

#1F2980 #80451F #59801F

monochromatic

#07091D #13194F #1F2980 #2B39B1 #4755D2

Accessibility & contrast

On white

12.45

#1F2980 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F2980 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2980

12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2980	#FFFFFF	#000000	##FFFFFF
##1F2980	1.00	12.45	1.69	12.45
#FFFFFF	12.45	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003983

Deuteranopia (green-blind)

#002F7E

Tritanopia (blue-blind)

#004050

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2980;
/* rgb */ color: rgb(31, 41, 128);
/* oklch */ color: oklch(33.6% 0.145 271.0);

Tailwind

colors: {
  custom: {
    50: '#6b63a6',
    500: '#1f2980',
    950: '#000000',
  },
}

SCSS

$custom: #1f2980;
$custom-light: #6b63a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2980",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 128
  },
  "hsl": {
    "h": 233.814,
    "s": 61.006,
    "l": 31.176
  },
  "oklch": {
    "l": 0.33632,
    "c": 0.1451,
    "h": 271
  },
  "luminance": 0.03436
}

Semantic roles & 50–950 ramp

primary

#1F2980

secondary

#B3A848

accent

#D444E4

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#08050F

muted

#7A797F

Preview Lab

Preview with #1F2980

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

Preview Lab → · Contrast checker → · Palette generator →