#1F2A80#1F2A80

#1F2A80 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.8% C 0.144 H 270.7°. Best body text is #FFFFFF at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A80
RGB	rgb(31, 42, 128)
HSL	hsl(233, 61%, 31%)
HSV	hsv(233, 76%, 50%)
CMYK	cmyk(75.8%, 67.2%, 0%, 49.8%)
CIE-LAB	lab(21.96, 27.24, -49.76)
CIE-LCH	lch(21.96, 56.73, 298.70°)
OKLab	oklab(33.82% 0.0018 -0.1438)
OKLCH	oklch(33.82% 0.144 270.7)
XYZ	xyz(5.2880, 3.5052, 20.8158)
Luminance	0.0351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A80 #80751F

analogous

#1F5A80 #1F2A80 #441F80

triadic

#1F2A80 #801F2A #2A801F

tetradic

#1F2A80 #801F5A #80751F #1F8044

square

#1F2A80 #801F5A #80751F #1F8044

split-complementary

#1F2A80 #80441F #5A801F

monochromatic

#070A1D #131A4F #1F2A80 #2B3AB1 #4757D2

Accessibility & contrast

On white

12.34

#1F2A80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F2A80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A80

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A80	#FFFFFF	#000000	##FFFFFF
##1F2A80	1.00	12.34	1.70	12.34
#FFFFFF	12.34	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003983

Deuteranopia (green-blind)

#00307E

Tritanopia (blue-blind)

#004151

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2a80;
/* rgb */ color: rgb(31, 42, 128);
/* oklch */ color: oklch(33.8% 0.144 270.7);

Tailwind

colors: {
  custom: {
    50: '#6b63a6',
    500: '#1f2a80',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a80;
$custom-light: #6b63a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a80",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 128
  },
  "hsl": {
    "h": 233.196,
    "s": 61.006,
    "l": 31.176
  },
  "oklch": {
    "l": 0.33818,
    "c": 0.14386,
    "h": 270.7
  },
  "luminance": 0.03506
}

Semantic roles & 50–950 ramp

primary

#1F2A80

secondary

#B3A748

accent

#D244E4

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#08050F

muted

#7A797F

Preview Lab

Preview with #1F2A80

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

Preview Lab → · Contrast checker → · Palette generator →