#1F2183#1F2183

#1F2183 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.6% C 0.158 H 272.5°. Best body text is #FFFFFF at 13.10:1 contrast (WCAG AA passes).

Color values

HEX	#1F2183
RGB	rgb(31, 33, 131)
HSL	hsl(239, 62%, 32%)
HSV	hsv(239, 76%, 51%)
CMYK	cmyk(76.3%, 74.8%, 0%, 48.6%)
CIE-LAB	lab(20.11, 34.21, -54.70)
CIE-LCH	lch(20.11, 64.51, 302.02°)
OKLab	oklab(32.57% 0.0068 -0.1583)
OKLCH	oklch(32.57% 0.158 272.5)
XYZ	xyz(5.2043, 3.0172, 21.7764)
Luminance	0.0302 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2183 #83811F

analogous

#1F5383 #1F2183 #4F1F83

triadic

#1F2183 #831F21 #21831F

tetradic

#1F2183 #831F53 #83811F #1F834F

square

#1F2183 #831F53 #83811F #1F834F

split-complementary

#1F2183 #834F1F #53831F

monochromatic

#080820 #131552 #1F2183 #2B2DB4 #494BD4

Accessibility & contrast

On white

13.10

#1F2183 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1F2183 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2183

13.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2183	#FFFFFF	#000000	##FFFFFF
##1F2183	1.00	13.10	1.60	13.10
#FFFFFF	13.10	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003586

Deuteranopia (green-blind)

#002C81

Tritanopia (blue-blind)

#003D50

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1f2183;
/* rgb */ color: rgb(31, 33, 131);
/* oklch */ color: oklch(32.6% 0.158 272.5);

Tailwind

colors: {
  custom: {
    50: '#6c5da8',
    500: '#1f2183',
    950: '#000000',
  },
}

SCSS

$custom: #1f2183;
$custom-light: #6c5da8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2183",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 131
  },
  "hsl": {
    "h": 238.8,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32572,
    "c": 0.15843,
    "h": 272.5
  },
  "luminance": 0.03018
}

Semantic roles & 50–950 ramp

primary

#1F2183

secondary

#B6B448

accent

#E243E5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F2183

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

Preview Lab → · Contrast checker → · Palette generator →