#1F4783#1F4783

#1F4783 is a dark, moderate blue. Relative luminance 0.064; OKLCH L 40.3% C 0.111 H 258.5°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#1F4783
RGB	rgb(31, 71, 131)
HSL	hsl(216, 62%, 32%)
HSV	hsv(216, 76%, 51%)
CMYK	cmyk(76.3%, 45.8%, 0%, 48.6%)
CIE-LAB	lab(30.49, 8.35, -37.82)
CIE-LCH	lch(30.49, 38.73, 282.44°)
OKLab	oklab(40.32% -0.022 -0.1083)
OKLCH	oklch(40.32% 0.111 258.5)
XYZ	xyz(6.9136, 6.4357, 22.3462)
Luminance	0.0644 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4783 #835B1F

analogous

#1F7983 #1F4783 #291F83

triadic

#1F4783 #831F47 #47831F

tetradic

#1F4783 #831F79 #835B1F #1F8329

square

#1F4783 #831F79 #835B1F #1F8329

split-complementary

#1F4783 #83291F #79831F

monochromatic

#081120 #132C52 #1F4783 #2B62B4 #4980D4

Accessibility & contrast

On white

9.18

#1F4783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1F4783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4783

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4783	#FFFFFF	#000000	##FFFFFF
##1F4783	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294D85

Deuteranopia (green-blind)

#154482

Tritanopia (blue-blind)

#00555E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4783;
/* rgb */ color: rgb(31, 71, 131);
/* oklch */ color: oklch(40.3% 0.111 258.5);

Tailwind

colors: {
  custom: {
    50: '#6979a7',
    500: '#1f4783',
    950: '#000000',
  },
}

SCSS

$custom: #1f4783;
$custom-light: #6979a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4783",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 131
  },
  "hsl": {
    "h": 216,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.40322,
    "c": 0.11052,
    "h": 258.5
  },
  "luminance": 0.06436
}

Semantic roles & 50–950 ramp

primary

#1F4783

secondary

#B68A48

accent

#A443E5

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1F4783

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

Preview Lab → · Contrast checker → · Palette generator →