#1F4573#1F4573

#1F4573 is a dark, moderate cyan. Relative luminance 0.058; OKLCH L 38.7% C 0.090 H 254.7°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F4573
RGB	rgb(31, 69, 115)
HSL	hsl(213, 58%, 29%)
HSV	hsv(213, 73%, 45%)
CMYK	cmyk(73%, 40%, 0%, 54.9%)
CIE-LAB	lab(28.86, 3.32, -30.40)
CIE-LCH	lch(28.86, 30.58, 276.24°)
OKLab	oklab(38.74% -0.0237 -0.0866)
OKLCH	oklch(38.74% 0.09 254.7)
XYZ	xyz(5.7866, 5.7847, 17.0279)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4573 #734D1F

analogous

#1F6F73 #1F4573 #231F73

triadic

#1F4573 #731F45 #45731F

tetradic

#1F4573 #731F6F #734D1F #1F7323

square

#1F4573 #731F6F #734D1F #1F7323

split-complementary

#1F4573 #73231F #6F731F

monochromatic

#060E18 #122843 #1F4573 #2C62A3 #4180CC

Accessibility & contrast

On white

9.74

#1F4573 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1F4573 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4573

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4573	#FFFFFF	#000000	##FFFFFF
##1F4573	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304875

Deuteranopia (green-blind)

#234072

Tritanopia (blue-blind)

#005056

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f4573;
/* rgb */ color: rgb(31, 69, 115);
/* oklch */ color: oklch(38.7% 0.090 254.7);

Tailwind

colors: {
  custom: {
    50: '#66789b',
    500: '#1f4573',
    950: '#000000',
  },
}

SCSS

$custom: #1f4573;
$custom-light: #66789b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4573",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 115
  },
  "hsl": {
    "h": 212.857,
    "s": 57.534,
    "l": 28.627
  },
  "oklch": {
    "l": 0.38739,
    "c": 0.08975,
    "h": 254.7
  },
  "luminance": 0.05785
}

Semantic roles & 50–950 ramp

primary

#1F4573

secondary

#A77B47

accent

#9B47E1

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1F4573

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

Preview Lab → · Contrast checker → · Palette generator →