#1580B4#1580B4

#1580B4 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 56.9% C 0.119 H 237.2°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#1580B4
RGB	rgb(21, 128, 180)
HSL	hsl(200, 79%, 39%)
HSV	hsv(200, 88%, 71%)
CMYK	cmyk(88.3%, 28.9%, 0%, 29.4%)
CIE-LAB	lab(50.56, -9.31, -35.27)
CIE-LCH	lch(50.56, 36.48, 255.21°)
OKLab	oklab(56.92% -0.0644 -0.0999)
OKLCH	oklch(56.92% 0.119 237.2)
XYZ	xyz(16.2633, 18.8909, 45.9603)
Luminance	0.1889 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1580B4 #B44915

analogous

#15B499 #1580B4 #1530B4

triadic

#1580B4 #B41580 #80B415

tetradic

#1580B4 #9915B4 #B44915 #30B415

square

#1580B4 #9915B4 #B44915 #30B415

split-complementary

#1580B4 #B41530 #B49915

monochromatic

#083246 #0F597D #1580B4 #21A5E5 #58BBEC

Accessibility & contrast

On white

4.39

#1580B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#1580B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1580B4

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1580B4	#FFFFFF	#000000	##000000
##1580B4	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6780B6

Deuteranopia (green-blind)

#5272B3

Tritanopia (blue-blind)

#008D92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #1580b4;
/* rgb */ color: rgb(21, 128, 180);
/* oklch */ color: oklch(56.9% 0.119 237.2);

Tailwind

colors: {
  custom: {
    50: '#72a4ca',
    500: '#1580b4',
    950: '#000000',
  },
}

SCSS

$custom: #1580b4;
$custom-light: #72a4ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1580b4",
  "rgb": {
    "r": 21,
    "g": 128,
    "b": 180
  },
  "hsl": {
    "h": 199.623,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.56922,
    "c": 0.1189,
    "h": 237.2
  },
  "luminance": 0.18893
}

Semantic roles & 50–950 ramp

primary

#1580B4

secondary

#CF7E56

accent

#7232F6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #1580B4

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

Preview Lab → · Contrast checker → · Palette generator →