#1F4989#1F4989

#1F4989 is a dark, moderate blue. Relative luminance 0.069; OKLCH L 41.2% C 0.117 H 258.8°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#1F4989
RGB	rgb(31, 73, 137)
HSL	hsl(216, 63%, 33%)
HSV	hsv(216, 77%, 54%)
CMYK	cmyk(77.4%, 46.7%, 0%, 46.3%)
CIE-LAB	lab(31.49, 9.39, -39.92)
CIE-LCH	lch(31.49, 41.01, 283.24°)
OKLab	oklab(41.22% -0.0227 -0.1144)
OKLCH	oklch(41.22% 0.117 258.8)
XYZ	xyz(7.4613, 6.8617, 24.5933)
Luminance	0.0686 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4989 #895F1F

analogous

#1F7E89 #1F4989 #2A1F89

triadic

#1F4989 #891F49 #49891F

tetradic

#1F4989 #891F7E #895F1F #1F892A

square

#1F4989 #891F7E #895F1F #1F892A

split-complementary

#1F4989 #892A1F #7E891F

monochromatic

#081425 #142E57 #1F4989 #2A64BB #4C83D6

Accessibility & contrast

On white

8.85

#1F4989 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1F4989 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4989

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4989	#FFFFFF	#000000	##FFFFFF
##1F4989	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284F8B

Deuteranopia (green-blind)

#104688

Tritanopia (blue-blind)

#005862

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f4989;
/* rgb */ color: rgb(31, 73, 137);
/* oklch */ color: oklch(41.2% 0.117 258.8);

Tailwind

colors: {
  custom: {
    50: '#6b7bac',
    500: '#1f4989',
    950: '#000000',
  },
}

SCSS

$custom: #1f4989;
$custom-light: #6b7bac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4989",
  "rgb": {
    "r": 31,
    "g": 73,
    "b": 137
  },
  "hsl": {
    "h": 216.226,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.41224,
    "c": 0.11666,
    "h": 258.8
  },
  "luminance": 0.06863
}

Semantic roles & 50–950 ramp

primary

#1F4989

secondary

#B98D4B

accent

#A542E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1F4989

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

Preview Lab → · Contrast checker → · Palette generator →