#1F548A#1F548A

#1F548A is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.9% C 0.105 H 251.8°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#1F548A
RGB	rgb(31, 84, 138)
HSL	hsl(210, 63%, 33%)
HSV	hsv(210, 78%, 54%)
CMYK	cmyk(77.5%, 39.1%, 0%, 45.9%)
CIE-LAB	lab(34.94, 2.47, -35.03)
CIE-LCH	lch(34.94, 35.12, 274.03°)
OKLab	oklab(43.92% -0.0327 -0.0999)
OKLCH	oklch(43.92% 0.105 251.8)
XYZ	xyz(8.3211, 8.4660, 25.2354)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F548A #8A551F

analogous

#1F898A #1F548A #1F1F8A

triadic

#1F548A #8A1F54 #548A1F

tetradic

#1F548A #8A1F89 #8A551F #1F8A1F

square

#1F548A #8A1F89 #8A551F #1F8A1F

split-complementary

#1F548A #8A1F1F #898A1F

monochromatic

#091726 #143658 #1F548A #2A72BC #4C91D7

Accessibility & contrast

On white

7.80

#1F548A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1F548A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F548A

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F548A	#FFFFFF	#000000	##FFFFFF
##1F548A	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B588C

Deuteranopia (green-blind)

#2A4E89

Tritanopia (blue-blind)

#006168

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f548a;
/* rgb */ color: rgb(31, 84, 138);
/* oklch */ color: oklch(43.9% 0.105 251.8);

Tailwind

colors: {
  custom: {
    50: '#6b83ac',
    500: '#1f548a',
    950: '#000000',
  },
}

SCSS

$custom: #1f548a;
$custom-light: #6b83ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f548a",
  "rgb": {
    "r": 31,
    "g": 84,
    "b": 138
  },
  "hsl": {
    "h": 210.28,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.43921,
    "c": 0.10511,
    "h": 251.8
  },
  "luminance": 0.08467
}

Semantic roles & 50–950 ramp

primary

#1F548A

secondary

#BA834B

accent

#9541E6

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1F548A

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

Preview Lab → · Contrast checker → · Palette generator →