#1F2383#1F2383

#1F2383 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.9% C 0.156 H 272.1°. Best body text is #FFFFFF at 12.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F2383
RGB	rgb(31, 35, 131)
HSL	hsl(238, 62%, 32%)
HSV	hsv(238, 76%, 51%)
CMYK	cmyk(76.3%, 73.3%, 0%, 48.6%)
CIE-LAB	lab(20.56, 32.96, -53.95)
CIE-LCH	lch(20.56, 63.23, 301.42°)
OKLab	oklab(32.89% 0.0058 -0.1561)
OKLCH	oklch(32.89% 0.156 272.1)
XYZ	xyz(5.2615, 3.1315, 21.7955)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2383 #837F1F

analogous

#1F5583 #1F2383 #4D1F83

triadic

#1F2383 #831F23 #23831F

tetradic

#1F2383 #831F55 #837F1F #1F834D

square

#1F2383 #831F55 #837F1F #1F834D

split-complementary

#1F2383 #834D1F #55831F

monochromatic

#080920 #131652 #1F2383 #2B30B4 #494ED4

Accessibility & contrast

On white

12.91

#1F2383 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1F2383 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2383

12.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2383	#FFFFFF	#000000	##FFFFFF
##1F2383	1.00	12.91	1.63	12.91
#FFFFFF	12.91	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003686

Deuteranopia (green-blind)

#002D81

Tritanopia (blue-blind)

#003E50

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f2383;
/* rgb */ color: rgb(31, 35, 131);
/* oklch */ color: oklch(32.9% 0.156 272.1);

Tailwind

colors: {
  custom: {
    50: '#6c5ea8',
    500: '#1f2383',
    950: '#000000',
  },
}

SCSS

$custom: #1f2383;
$custom-light: #6c5ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2383",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 131
  },
  "hsl": {
    "h": 237.6,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32894,
    "c": 0.15623,
    "h": 272.1
  },
  "luminance": 0.03132
}

Semantic roles & 50–950 ramp

primary

#1F2383

secondary

#B6B148

accent

#DE43E5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F2383

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

Preview Lab → · Contrast checker → · Palette generator →