#1D579C#1D579C

#1D579C is a mid, vivid cyan. Relative luminance 0.095; OKLCH L 45.8% C 0.127 H 255.2°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D579C
RGB	rgb(29, 87, 156)
HSL	hsl(213, 69%, 36%)
HSV	hsv(213, 81%, 61%)
CMYK	cmyk(81.4%, 44.2%, 0%, 38.8%)
CIE-LAB	lab(36.89, 7.40, -42.82)
CIE-LCH	lch(36.89, 43.46, 279.81°)
OKLab	oklab(45.78% -0.0323 -0.1227)
OKLCH	oklch(45.78% 0.127 255.2)
XYZ	xyz(9.9134, 9.4767, 32.7527)
Luminance	0.0948 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D579C #9C621D

analogous

#1D979C #1D579C #221D9C

triadic

#1D579C #9C1D57 #579C1D

tetradic

#1D579C #9C1D97 #9C621D #1D9C22

square

#1D579C #9C1D97 #9C621D #1D9C22

split-complementary

#1D579C #9C221D #979C1D

monochromatic

#0A1D35 #133A68 #1D579C #2774D0 #5494DF

Accessibility & contrast

On white

7.25

#1D579C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#1D579C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D579C

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D579C	#FFFFFF	#000000	##FFFFFF
##1D579C	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345D9F

Deuteranopia (green-blind)

#1B519B

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1d579c;
/* rgb */ color: rgb(29, 87, 156);
/* oklch */ color: oklch(45.8% 0.127 255.2);

Tailwind

colors: {
  custom: {
    50: '#6e85ba',
    500: '#1d579c',
    950: '#000000',
  },
}

SCSS

$custom: #1d579c;
$custom-light: #6e85ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1d579c",
  "rgb": {
    "r": 29,
    "g": 87,
    "b": 156
  },
  "hsl": {
    "h": 212.598,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.45778,
    "c": 0.12691,
    "h": 255.2
  },
  "luminance": 0.09478
}

Semantic roles & 50–950 ramp

primary

#1D579C

secondary

#C28F52

accent

#9B3CEB

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #1D579C

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

Preview Lab → · Contrast checker → · Palette generator →