#1F4A73#1F4A73

#1F4A73 is a dark, moderate cyan. Relative luminance 0.064; OKLCH L 40.0% C 0.084 H 249.8°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#1F4A73
RGB	rgb(31, 74, 115)
HSL	hsl(209, 58%, 29%)
HSV	hsv(209, 73%, 45%)
CMYK	cmyk(73%, 35.7%, 0%, 54.9%)
CIE-LAB	lab(30.46, -0.01, -27.87)
CIE-LCH	lch(30.46, 27.87, 269.99°)
OKLab	oklab(39.99% -0.0291 -0.0791)
OKLCH	oklch(39.99% 0.084 249.8)
XYZ	xyz(6.1072, 6.4260, 17.1348)
Luminance	0.0643 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4A73 #73481F

analogous

#1F7372 #1F4A73 #1F2073

triadic

#1F4A73 #731F4A #4A731F

tetradic

#1F4A73 #721F73 #73481F #20731F

square

#1F4A73 #721F73 #73481F #20731F

split-complementary

#1F4A73 #731F20 #73721F

monochromatic

#061018 #122B43 #1F4A73 #2C69A3 #4188CC

Accessibility & contrast

On white

9.19

#1F4A73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1F4A73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4A73

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4A73	#FFFFFF	#000000	##FFFFFF
##1F4A73	1.00	9.19	2.29	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#384C75

Deuteranopia (green-blind)

#2C4472

Tritanopia (blue-blind)

#005459

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4a73;
/* rgb */ color: rgb(31, 74, 115);
/* oklch */ color: oklch(40.0% 0.084 249.8);

Tailwind

colors: {
  custom: {
    50: '#667c9b',
    500: '#1f4a73',
    950: '#000000',
  },
}

SCSS

$custom: #1f4a73;
$custom-light: #667c9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4a73",
  "rgb": {
    "r": 31,
    "g": 74,
    "b": 115
  },
  "hsl": {
    "h": 209.286,
    "s": 57.534,
    "l": 28.627
  },
  "oklch": {
    "l": 0.3999,
    "c": 0.08426,
    "h": 249.8
  },
  "luminance": 0.06427
}

Semantic roles & 50–950 ramp

primary

#1F4A73

secondary

#A77647

accent

#9247E1

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1F4A73

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

Preview Lab → · Contrast checker → · Palette generator →