#1D579F#1D579F

#1D579F is a mid, vivid cyan. Relative luminance 0.096; OKLCH L 46.0% C 0.131 H 256.0°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#1D579F
RGB	rgb(29, 87, 159)
HSL	hsl(213, 69%, 37%)
HSV	hsv(213, 82%, 62%)
CMYK	cmyk(81.8%, 45.3%, 0%, 37.6%)
CIE-LAB	lab(37.08, 8.60, -44.32)
CIE-LCH	lch(37.08, 45.14, 280.98°)
OKLab	oklab(45.99% -0.0317 -0.1271)
OKLCH	oklch(45.99% 0.131 256)
XYZ	xyz(10.1706, 9.5796, 34.1072)
Luminance	0.0958 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D579F #9F651D

analogous

#1D989F #1D579F #241D9F

triadic

#1D579F #9F1D57 #579F1D

tetradic

#1D579F #9F1D98 #9F651D #1D9F24

square

#1D579F #9F1D98 #9F651D #1D9F24

split-complementary

#1D579F #9F241D #989F1D

monochromatic

#0A1E37 #143B6B #1D579F #2673D3 #5694E0

Accessibility & contrast

On white

7.20

#1D579F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#1D579F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D579F

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D579F	#FFFFFF	#000000	##FFFFFF
##1D579F	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#315EA2

Deuteranopia (green-blind)

#15529E

Tritanopia (blue-blind)

#006873

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1d579f;
/* rgb */ color: rgb(29, 87, 159);
/* oklch */ color: oklch(46.0% 0.131 256.0);

Tailwind

colors: {
  custom: {
    50: '#6f85bc',
    500: '#1d579f',
    950: '#000000',
  },
}

SCSS

$custom: #1d579f;
$custom-light: #6f85bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1d579f",
  "rgb": {
    "r": 29,
    "g": 87,
    "b": 159
  },
  "hsl": {
    "h": 213.231,
    "s": 69.149,
    "l": 36.863
  },
  "oklch": {
    "l": 0.45987,
    "c": 0.13101,
    "h": 256
  },
  "luminance": 0.09581
}

Semantic roles & 50–950 ramp

primary

#1D579F

secondary

#C49254

accent

#9D3CEC

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1D579F

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

Preview Lab → · Contrast checker → · Palette generator →