#1F2983#1F2983

#1F2983 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.9% C 0.149 H 270.8°. Best body text is #FFFFFF at 12.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F2983
RGB	rgb(31, 41, 131)
HSL	hsl(234, 62%, 32%)
HSV	hsv(234, 76%, 51%)
CMYK	cmyk(76.3%, 68.7%, 0%, 48.6%)
CIE-LAB	lab(22.00, 29.06, -51.59)
CIE-LCH	lch(22.00, 59.21, 299.39°)
OKLab	oklab(33.93% 0.0022 -0.1492)
OKLCH	oklch(33.93% 0.149 270.8)
XYZ	xyz(5.4534, 3.5153, 21.8594)
Luminance	0.0352 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2983 #83791F

analogous

#1F5B83 #1F2983 #471F83

triadic

#1F2983 #831F29 #29831F

tetradic

#1F2983 #831F5B #83791F #1F8347

square

#1F2983 #831F5B #83791F #1F8347

split-complementary

#1F2983 #83471F #5B831F

monochromatic

#080A20 #131A52 #1F2983 #2B38B4 #4956D4

Accessibility & contrast

On white

12.33

#1F2983 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F2983 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2983

12.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2983	#FFFFFF	#000000	##FFFFFF
##1F2983	1.00	12.33	1.70	12.33
#FFFFFF	12.33	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003986

Deuteranopia (green-blind)

#003081

Tritanopia (blue-blind)

#004152

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2983;
/* rgb */ color: rgb(31, 41, 131);
/* oklch */ color: oklch(33.9% 0.149 270.8);

Tailwind

colors: {
  custom: {
    50: '#6b63a8',
    500: '#1f2983',
    950: '#000000',
  },
}

SCSS

$custom: #1f2983;
$custom-light: #6b63a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2983",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 131
  },
  "hsl": {
    "h": 234,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.33933,
    "c": 0.14924,
    "h": 270.8
  },
  "luminance": 0.03516
}

Semantic roles & 50–950 ramp

primary

#1F2983

secondary

#B6AB48

accent

#D543E5

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1F2983

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

Preview Lab → · Contrast checker → · Palette generator →