#1597B4#1597B4

#1597B4 is a light, moderate cyan. Relative luminance 0.256; OKLCH L 62.6% C 0.109 H 218.5°. Best body text is #000000 at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#1597B4
RGB	rgb(21, 151, 180)
HSL	hsl(191, 79%, 39%)
HSV	hsv(191, 88%, 71%)
CMYK	cmyk(88.3%, 16.1%, 0%, 29.4%)
CIE-LAB	lab(57.64, -21.97, -24.26)
CIE-LCH	lch(57.64, 32.73, 227.84°)
OKLab	oklab(62.59% -0.0853 -0.068)
OKLCH	oklch(62.59% 0.109 218.5)
XYZ	xyz(19.6105, 25.5854, 47.0760)
Luminance	0.2559 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1597B4 #B43215

analogous

#15B481 #1597B4 #1548B4

triadic

#1597B4 #B41597 #97B415

tetradic

#1597B4 #8115B4 #B43215 #48B415

square

#1597B4 #8115B4 #B43215 #48B415

split-complementary

#1597B4 #B41548 #B48115

monochromatic

#083B46 #0F697D #1597B4 #21C1E5 #58D1EC

Accessibility & contrast

On white

3.43

#1597B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.12

#1597B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1597B4

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1597B4	#FFFFFF	#000000	##000000
##1597B4	1.00	3.43	6.12	6.12
#FFFFFF	3.43	1.00	21.00	21.00
#000000	6.12	21.00	1.00	1.00
##000000	6.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8592B6

Deuteranopia (green-blind)

#7184B4

Tritanopia (blue-blind)

#00A1A0

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #1597b4;
/* rgb */ color: rgb(21, 151, 180);
/* oklch */ color: oklch(62.6% 0.109 218.5);

Tailwind

colors: {
  custom: {
    50: '#74b5ca',
    500: '#1597b4',
    950: '#000000',
  },
}

SCSS

$custom: #1597b4;
$custom-light: #74b5ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1597b4",
  "rgb": {
    "r": 21,
    "g": 151,
    "b": 180
  },
  "hsl": {
    "h": 190.943,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.62593,
    "c": 0.10908,
    "h": 218.5
  },
  "luminance": 0.25588
}

Semantic roles & 50–950 ramp

primary

#1597B4

secondary

#CF6C56

accent

#5632F6

background

#F7FBFC

surface

#EEF6F8

border

#C9D0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #1597B4

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

Preview Lab → · Contrast checker → · Palette generator →