#1F4889#1F4889

#1F4889 is a dark, moderate blue. Relative luminance 0.067; OKLCH L 41.0% C 0.118 H 259.4°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#1F4889
RGB	rgb(31, 72, 137)
HSL	hsl(217, 63%, 33%)
HSV	hsv(217, 77%, 54%)
CMYK	cmyk(77.4%, 47.4%, 0%, 46.3%)
CIE-LAB	lab(31.19, 10.07, -40.41)
CIE-LCH	lch(31.19, 41.64, 284.00°)
OKLab	oklab(40.99% -0.0218 -0.1159)
OKLCH	oklch(40.99% 0.118 259.4)
XYZ	xyz(7.3962, 6.7313, 24.5715)
Luminance	0.0673 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4889 #89601F

analogous

#1F7D89 #1F4889 #2B1F89

triadic

#1F4889 #891F48 #48891F

tetradic

#1F4889 #891F7D #89601F #1F892B

square

#1F4889 #891F7D #89601F #1F892B

split-complementary

#1F4889 #892B1F #7D891F

monochromatic

#081425 #142E57 #1F4889 #2A62BB #4C82D6

Accessibility & contrast

On white

8.95

#1F4889 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1F4889 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4889

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4889	#FFFFFF	#000000	##FFFFFF
##1F4889	1.00	8.95	2.35	8.95
#FFFFFF	8.95	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264F8B

Deuteranopia (green-blind)

#0C4588

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f4889;
/* rgb */ color: rgb(31, 72, 137);
/* oklch */ color: oklch(41.0% 0.118 259.4);

Tailwind

colors: {
  custom: {
    50: '#6b7aac',
    500: '#1f4889',
    950: '#000000',
  },
}

SCSS

$custom: #1f4889;
$custom-light: #6b7aac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4889",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 137
  },
  "hsl": {
    "h": 216.792,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.40991,
    "c": 0.11792,
    "h": 259.4
  },
  "luminance": 0.06732
}

Semantic roles & 50–950 ramp

primary

#1F4889

secondary

#B98E4B

accent

#A742E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1F4889

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

Preview Lab → · Contrast checker → · Palette generator →