#1F447A#1F447A

#1F447A is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.0% C 0.101 H 258.0°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#1F447A
RGB	rgb(31, 68, 122)
HSL	hsl(216, 59%, 30%)
HSV	hsv(216, 75%, 48%)
CMYK	cmyk(74.6%, 44.3%, 0%, 52.2%)
CIE-LAB	lab(28.98, 6.79, -34.62)
CIE-LCH	lch(28.98, 35.28, 281.09°)
OKLab	oklab(38.97% -0.021 -0.099)
OKLCH	oklch(38.97% 0.101 258)
XYZ	xyz(6.1438, 5.8300, 19.2101)
Luminance	0.0583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F447A #7A551F

analogous

#1F727A #1F447A #271F7A

triadic

#1F447A #7A1F44 #447A1F

tetradic

#1F447A #7A1F72 #7A551F #1F7A27

square

#1F447A #7A1F72 #7A551F #1F7A27

split-complementary

#1F447A #7A271F #727A1F

monochromatic

#060E18 #132949 #1F447A #2B5FAB #447DCF

Accessibility & contrast

On white

9.69

#1F447A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1F447A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F447A

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F447A	#FFFFFF	#000000	##FFFFFF
##1F447A	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A497C

Deuteranopia (green-blind)

#1A4079

Tritanopia (blue-blind)

#005159

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f447a;
/* rgb */ color: rgb(31, 68, 122);
/* oklch */ color: oklch(39.0% 0.101 258.0);

Tailwind

colors: {
  custom: {
    50: '#6777a1',
    500: '#1f447a',
    950: '#000000',
  },
}

SCSS

$custom: #1f447a;
$custom-light: #6777a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f447a",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 122
  },
  "hsl": {
    "h": 215.604,
    "s": 59.477,
    "l": 30
  },
  "oklch": {
    "l": 0.38969,
    "c": 0.10116,
    "h": 258
  },
  "luminance": 0.05831
}

Semantic roles & 50–950 ramp

primary

#1F447A

secondary

#AD8447

accent

#A345E3

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#07080F

muted

#7A7B7E

Preview Lab

Preview with #1F447A

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

Preview Lab → · Contrast checker → · Palette generator →