#1F4081#1F4081

#1F4081 is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.5% C 0.117 H 262.2°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F4081
RGB	rgb(31, 64, 129)
HSL	hsl(220, 61%, 31%)
HSV	hsv(220, 76%, 51%)
CMYK	cmyk(76%, 50.4%, 0%, 49.4%)
CIE-LAB	lab(28.23, 12.35, -40.21)
CIE-LCH	lch(28.23, 42.06, 287.07°)
OKLab	oklab(38.54% -0.0159 -0.1155)
OKLCH	oklch(38.54% 0.117 262.2)
XYZ	xyz(6.3595, 5.5424, 21.4992)
Luminance	0.0554 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4081 #81601F

analogous

#1F7181 #1F4081 #2F1F81

triadic

#1F4081 #811F40 #40811F

tetradic

#1F4081 #811F71 #81601F #1F812F

square

#1F4081 #811F71 #81601F #1F812F

split-complementary

#1F4081 #812F1F #71811F

monochromatic

#070F1E #132850 #1F4081 #2B58B2 #4776D3

Accessibility & contrast

On white

9.96

#1F4081 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1F4081 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4081

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4081	#FFFFFF	#000000	##FFFFFF
##1F4081	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4783

Deuteranopia (green-blind)

#003E80

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f4081;
/* rgb */ color: rgb(31, 64, 129);
/* oklch */ color: oklch(38.5% 0.117 262.2);

Tailwind

colors: {
  custom: {
    50: '#6974a6',
    500: '#1f4081',
    950: '#000000',
  },
}

SCSS

$custom: #1f4081;
$custom-light: #6974a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4081",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 129
  },
  "hsl": {
    "h": 219.796,
    "s": 61.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.38542,
    "c": 0.11655,
    "h": 262.2
  },
  "luminance": 0.05543
}

Semantic roles & 50–950 ramp

primary

#1F4081

secondary

#B49048

accent

#AE43E4

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F4081

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

Preview Lab → · Contrast checker → · Palette generator →