#1F5583#1F5583

#1F5583 is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.7% C 0.095 H 247.8°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F5583
RGB	rgb(31, 85, 131)
HSL	hsl(208, 62%, 32%)
HSV	hsv(208, 76%, 51%)
CMYK	cmyk(76.3%, 35.1%, 0%, 48.6%)
CIE-LAB	lab(34.85, -0.92, -30.87)
CIE-LCH	lch(34.85, 30.89, 268.30°)
OKLab	oklab(43.73% -0.0357 -0.0877)
OKLCH	oklch(43.73% 0.095 247.8)
XYZ	xyz(7.9087, 8.4261, 22.6779)
Luminance	0.0843 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5583 #834D1F

analogous

#1F837F #1F5583 #1F2383

triadic

#1F5583 #831F55 #55831F

tetradic

#1F5583 #7F1F83 #834D1F #23831F

square

#1F5583 #7F1F83 #834D1F #23831F

split-complementary

#1F5583 #831F23 #837F1F

monochromatic

#081520 #133552 #1F5583 #2B75B4 #4994D4

Accessibility & contrast

On white

7.82

#1F5583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1F5583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5583

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5583	#FFFFFF	#000000	##FFFFFF
##1F5583	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#405785

Deuteranopia (green-blind)

#324E82

Tritanopia (blue-blind)

#006066

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f5583;
/* rgb */ color: rgb(31, 85, 131);
/* oklch */ color: oklch(43.7% 0.095 247.8);

Tailwind

colors: {
  custom: {
    50: '#6984a7',
    500: '#1f5583',
    950: '#000000',
  },
}

SCSS

$custom: #1f5583;
$custom-light: #6984a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5583",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 131
  },
  "hsl": {
    "h": 207.6,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.4373,
    "c": 0.09468,
    "h": 247.8
  },
  "luminance": 0.08427
}

Semantic roles & 50–950 ramp

primary

#1F5583

secondary

#B67B48

accent

#8D43E5

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F5583

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

Preview Lab → · Contrast checker → · Palette generator →