#1F4080#1F4080

#1F4080 is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.5% C 0.115 H 262.0°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#1F4080
RGB	rgb(31, 64, 128)
HSL	hsl(220, 61%, 31%)
HSV	hsv(220, 76%, 50%)
CMYK	cmyk(75.8%, 50%, 0%, 49.8%)
CIE-LAB	lab(28.16, 11.95, -39.70)
CIE-LCH	lch(28.16, 41.46, 286.75°)
OKLab	oklab(38.46% -0.016 -0.114)
OKLCH	oklch(38.46% 0.115 262)
XYZ	xyz(6.2934, 5.5159, 21.1509)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4080 #805F1F

analogous

#1F7080 #1F4080 #2F1F80

triadic

#1F4080 #801F40 #40801F

tetradic

#1F4080 #801F70 #805F1F #1F802F

square

#1F4080 #801F70 #805F1F #1F802F

split-complementary

#1F4080 #802F1F #70801F

monochromatic

#070F1D #13274F #1F4080 #2B59B1 #4776D2

Accessibility & contrast

On white

9.98

#1F4080 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1F4080 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4080

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4080	#FFFFFF	#000000	##FFFFFF
##1F4080	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C4782

Deuteranopia (green-blind)

#003E7F

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f4080;
/* rgb */ color: rgb(31, 64, 128);
/* oklch */ color: oklch(38.5% 0.115 262.0);

Tailwind

colors: {
  custom: {
    50: '#6974a5',
    500: '#1f4080',
    950: '#000000',
  },
}

SCSS

$custom: #1f4080;
$custom-light: #6974a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4080",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 128
  },
  "hsl": {
    "h": 219.588,
    "s": 61.006,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38465,
    "c": 0.11508,
    "h": 262
  },
  "luminance": 0.05517
}

Semantic roles & 50–950 ramp

primary

#1F4080

secondary

#B38F48

accent

#AE44E4

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F4080

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

Preview Lab → · Contrast checker → · Palette generator →