#1F579C#1F579C

#1F579C is a mid, vivid cyan. Relative luminance 0.095; OKLCH L 45.8% C 0.126 H 255.7°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#1F579C
RGB	rgb(31, 87, 156)
HSL	hsl(213, 67%, 37%)
HSV	hsv(213, 80%, 61%)
CMYK	cmyk(80.1%, 44.2%, 0%, 38.8%)
CIE-LAB	lab(36.94, 7.62, -42.73)
CIE-LCH	lch(36.94, 43.40, 280.11°)
OKLab	oklab(45.84% -0.0312 -0.1224)
OKLCH	oklch(45.84% 0.126 255.7)
XYZ	xyz(9.9718, 9.5068, 32.7555)
Luminance	0.0951 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F579C #9C641F

analogous

#1F969C #1F579C #261F9C

triadic

#1F579C #9C1F57 #579C1F

tetradic

#1F579C #9C1F96 #9C641F #1F9C26

square

#1F579C #9C1F96 #9C641F #1F9C26

split-complementary

#1F579C #9C261F #969C1F

monochromatic

#0B1E36 #153B69 #1F579C #2973CF #5894DE

Accessibility & contrast

On white

7.24

#1F579C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#1F579C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F579C

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F579C	#FFFFFF	#000000	##FFFFFF
##1F579C	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345D9F

Deuteranopia (green-blind)

#1B529B

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1f579c;
/* rgb */ color: rgb(31, 87, 156);
/* oklch */ color: oklch(45.8% 0.126 255.7);

Tailwind

colors: {
  custom: {
    50: '#6f85ba',
    500: '#1f579c',
    950: '#000000',
  },
}

SCSS

$custom: #1f579c;
$custom-light: #6f85ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f579c",
  "rgb": {
    "r": 31,
    "g": 87,
    "b": 156
  },
  "hsl": {
    "h": 213.12,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.45837,
    "c": 0.12635,
    "h": 255.7
  },
  "luminance": 0.09508
}

Semantic roles & 50–950 ramp

primary

#1F579C

secondary

#C19155

accent

#9D3EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #1F579C

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

Preview Lab → · Contrast checker → · Palette generator →