#1D579E#1D579E

#1D579E is a mid, vivid cyan. Relative luminance 0.095; OKLCH L 45.9% C 0.130 H 255.7°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#1D579E
RGB	rgb(29, 87, 158)
HSL	hsl(213, 69%, 37%)
HSV	hsv(213, 82%, 62%)
CMYK	cmyk(81.6%, 44.9%, 0%, 38%)
CIE-LAB	lab(37.01, 8.20, -43.82)
CIE-LCH	lch(37.01, 44.58, 280.60°)
OKLab	oklab(45.92% -0.0319 -0.1257)
OKLCH	oklch(45.92% 0.13 255.7)
XYZ	xyz(10.0841, 9.5450, 33.6520)
Luminance	0.0955 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D579E #9E641D

analogous

#1D989E #1D579E #231D9E

triadic

#1D579E #9E1D57 #579E1D

tetradic

#1D579E #9E1D98 #9E641D #1D9E23

square

#1D579E #9E1D98 #9E641D #1D9E23

split-complementary

#1D579E #9E231D #989E1D

monochromatic

#0A1E37 #143B6A #1D579E #2673D2 #5694E0

Accessibility & contrast

On white

7.22

#1D579E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#1D579E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D579E

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D579E	#FFFFFF	#000000	##FFFFFF
##1D579E	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#325DA1

Deuteranopia (green-blind)

#17529D

Tritanopia (blue-blind)

#006873

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1d579e;
/* rgb */ color: rgb(29, 87, 158);
/* oklch */ color: oklch(45.9% 0.130 255.7);

Tailwind

colors: {
  custom: {
    50: '#6f85bb',
    500: '#1d579e',
    950: '#000000',
  },
}

SCSS

$custom: #1d579e;
$custom-light: #6f85bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d579e",
  "rgb": {
    "r": 29,
    "g": 87,
    "b": 158
  },
  "hsl": {
    "h": 213.023,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.45917,
    "c": 0.12964,
    "h": 255.7
  },
  "luminance": 0.09546
}

Semantic roles & 50–950 ramp

primary

#1D579E

secondary

#C39154

accent

#9D3CEC

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #1D579E

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

Preview Lab → · Contrast checker → · Palette generator →