#1F2A83#1F2A83

#1F2A83 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.1% C 0.148 H 270.6°. Best body text is #FFFFFF at 12.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A83
RGB	rgb(31, 42, 131)
HSL	hsl(233, 62%, 32%)
HSV	hsv(233, 76%, 51%)
CMYK	cmyk(76.3%, 67.9%, 0%, 48.6%)
CIE-LAB	lab(22.25, 28.39, -51.18)
CIE-LCH	lch(22.25, 58.53, 299.01°)
OKLab	oklab(34.12% 0.0016 -0.148)
OKLCH	oklch(34.12% 0.148 270.6)
XYZ	xyz(5.4884, 3.5854, 21.8711)
Luminance	0.0359 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A83 #83781F

analogous

#1F5C83 #1F2A83 #461F83

triadic

#1F2A83 #831F2A #2A831F

tetradic

#1F2A83 #831F5C #83781F #1F8346

square

#1F2A83 #831F5C #83781F #1F8346

split-complementary

#1F2A83 #83461F #5C831F

monochromatic

#080A20 #131A52 #1F2A83 #2B3AB4 #4958D4

Accessibility & contrast

On white

12.23

#1F2A83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1F2A83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A83

12.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A83	#FFFFFF	#000000	##FFFFFF
##1F2A83	1.00	12.23	1.72	12.23
#FFFFFF	12.23	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A86

Deuteranopia (green-blind)

#003181

Tritanopia (blue-blind)

#004252

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2a83;
/* rgb */ color: rgb(31, 42, 131);
/* oklch */ color: oklch(34.1% 0.148 270.6);

Tailwind

colors: {
  custom: {
    50: '#6b63a8',
    500: '#1f2a83',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a83;
$custom-light: #6b63a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a83",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 131
  },
  "hsl": {
    "h": 233.4,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.34116,
    "c": 0.14802,
    "h": 270.6
  },
  "luminance": 0.03586
}

Semantic roles & 50–950 ramp

primary

#1F2A83

secondary

#B6AA48

accent

#D343E5

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1F2A83

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

Preview Lab → · Contrast checker → · Palette generator →