#1F579A#1F579A

#1F579A is a mid, vivid cyan. Relative luminance 0.094; OKLCH L 45.7% C 0.124 H 255.2°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F579A
RGB	rgb(31, 87, 154)
HSL	hsl(213, 66%, 36%)
HSV	hsv(213, 80%, 60%)
CMYK	cmyk(79.9%, 43.5%, 0%, 39.6%)
CIE-LAB	lab(36.82, 6.83, -41.73)
CIE-LCH	lch(36.82, 42.28, 279.29°)
OKLab	oklab(45.7% -0.0316 -0.1195)
OKLCH	oklch(45.7% 0.124 255.2)
XYZ	xyz(9.8038, 9.4396, 31.8709)
Luminance	0.0944 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F579A #9A621F

analogous

#1F959A #1F579A #251F9A

triadic

#1F579A #9A1F57 #579A1F

tetradic

#1F579A #9A1F95 #9A621F #1F9A25

square

#1F579A #9A1F95 #9A621F #1F9A25

split-complementary

#1F579A #9A251F #959A1F

monochromatic

#0A1D34 #153A67 #1F579A #2974CD #5694DD

Accessibility & contrast

On white

7.27

#1F579A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#1F579A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F579A

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F579A	#FFFFFF	#000000	##FFFFFF
##1F579A	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355D9D

Deuteranopia (green-blind)

#1F5199

Tritanopia (blue-blind)

#006771

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1f579a;
/* rgb */ color: rgb(31, 87, 154);
/* oklch */ color: oklch(45.7% 0.124 255.2);

Tailwind

colors: {
  custom: {
    50: '#6e85b8',
    500: '#1f579a',
    950: '#000000',
  },
}

SCSS

$custom: #1f579a;
$custom-light: #6e85b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f579a",
  "rgb": {
    "r": 31,
    "g": 87,
    "b": 154
  },
  "hsl": {
    "h": 212.683,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.457,
    "c": 0.1236,
    "h": 255.2
  },
  "luminance": 0.09441
}

Semantic roles & 50–950 ramp

primary

#1F579A

secondary

#C18F54

accent

#9C3EE9

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #1F579A

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

Preview Lab → · Contrast checker → · Palette generator →