#1599B4#1599B4

#1599B4 is a light, moderate cyan. Relative luminance 0.262; OKLCH L 63.1% C 0.109 H 216.8°. Best body text is #000000 at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#1599B4
RGB	rgb(21, 153, 180)
HSL	hsl(190, 79%, 39%)
HSV	hsv(190, 88%, 71%)
CMYK	cmyk(88.3%, 15%, 0%, 29.4%)
CIE-LAB	lab(58.26, -23.01, -23.31)
CIE-LCH	lch(58.26, 32.76, 225.38°)
OKLab	oklab(63.09% -0.0872 -0.0653)
OKLCH	oklch(63.09% 0.109 216.8)
XYZ	xyz(19.9351, 26.2346, 47.1842)
Luminance	0.2624 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1599B4 #B43015

analogous

#15B480 #1599B4 #1549B4

triadic

#1599B4 #B41599 #99B415

tetradic

#1599B4 #8015B4 #B43015 #49B415

square

#1599B4 #8015B4 #B43015 #49B415

split-complementary

#1599B4 #B41549 #B48015

monochromatic

#083C46 #0F6A7D #1599B4 #21C4E5 #58D2EC

Accessibility & contrast

On white

3.36

#1599B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.25

#1599B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1599B4

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1599B4	#FFFFFF	#000000	##000000
##1599B4	1.00	3.36	6.25	6.25
#FFFFFF	3.36	1.00	21.00	21.00
#000000	6.25	21.00	1.00	1.00
##000000	6.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8794B5

Deuteranopia (green-blind)

#7386B4

Tritanopia (blue-blind)

#00A2A2

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #1599b4;
/* rgb */ color: rgb(21, 153, 180);
/* oklch */ color: oklch(63.1% 0.109 216.8);

Tailwind

colors: {
  custom: {
    50: '#75b7ca',
    500: '#1599b4',
    950: '#000000',
  },
}

SCSS

$custom: #1599b4;
$custom-light: #75b7ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1599b4",
  "rgb": {
    "r": 21,
    "g": 153,
    "b": 180
  },
  "hsl": {
    "h": 190.189,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.63091,
    "c": 0.1089,
    "h": 216.8
  },
  "luminance": 0.26237
}

Semantic roles & 50–950 ramp

primary

#1599B4

secondary

#CF6B56

accent

#5332F6

background

#F7FBFC

surface

#EEF6F8

border

#C9D0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #1599B4

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

Preview Lab → · Contrast checker → · Palette generator →