#1F447D#1F447D

#1F447D is a dark, moderate blue. Relative luminance 0.059; OKLCH L 39.2% C 0.106 H 258.9°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#1F447D
RGB	rgb(31, 68, 125)
HSL	hsl(216, 60%, 31%)
HSV	hsv(216, 75%, 49%)
CMYK	cmyk(75.2%, 45.6%, 0%, 51%)
CIE-LAB	lab(29.17, 7.99, -36.19)
CIE-LCH	lch(29.17, 37.06, 282.45°)
OKLab	oklab(39.18% -0.0203 -0.1036)
OKLCH	oklch(39.18% 0.106 258.9)
XYZ	xyz(6.3325, 5.9055, 20.2042)
Luminance	0.0591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F447D #7D581F

analogous

#1F737D #1F447D #291F7D

triadic

#1F447D #7D1F44 #447D1F

tetradic

#1F447D #7D1F73 #7D581F #1F7D29

square

#1F447D #7D1F73 #7D581F #1F7D29

split-complementary

#1F447D #7D291F #737D1F

monochromatic

#070F1B #13294C #1F447D #2B5FAE #457CD1

Accessibility & contrast

On white

9.63

#1F447D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1F447D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F447D

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F447D	#FFFFFF	#000000	##FFFFFF
##1F447D	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28497F

Deuteranopia (green-blind)

#16417C

Tritanopia (blue-blind)

#00515A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f447d;
/* rgb */ color: rgb(31, 68, 125);
/* oklch */ color: oklch(39.2% 0.106 258.9);

Tailwind

colors: {
  custom: {
    50: '#6877a3',
    500: '#1f447d',
    950: '#000000',
  },
}

SCSS

$custom: #1f447d;
$custom-light: #6877a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f447d",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 125
  },
  "hsl": {
    "h": 216.383,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.39181,
    "c": 0.10555,
    "h": 258.9
  },
  "luminance": 0.05906
}

Semantic roles & 50–950 ramp

primary

#1F447D

secondary

#B08748

accent

#A544E3

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F447D

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

Preview Lab → · Contrast checker → · Palette generator →