#1598B4#1598B4

#1598B4 is a light, moderate cyan. Relative luminance 0.259; OKLCH L 62.8% C 0.109 H 217.7°. Best body text is #000000 at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#1598B4
RGB	rgb(21, 152, 180)
HSL	hsl(191, 79%, 39%)
HSV	hsv(191, 88%, 71%)
CMYK	cmyk(88.3%, 15.6%, 0%, 29.4%)
CIE-LAB	lab(57.95, -22.49, -23.79)
CIE-LCH	lch(57.95, 32.74, 226.61°)
OKLab	oklab(62.84% -0.0862 -0.0666)
OKLCH	oklch(62.84% 0.109 217.7)
XYZ	xyz(19.7722, 25.9086, 47.1299)
Luminance	0.2591 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1598B4 #B43115

analogous

#15B481 #1598B4 #1549B4

triadic

#1598B4 #B41598 #98B415

tetradic

#1598B4 #8115B4 #B43115 #49B415

square

#1598B4 #8115B4 #B43115 #49B415

split-complementary

#1598B4 #B41549 #B48115

monochromatic

#083B46 #0F6A7D #1598B4 #21C3E5 #58D2EC

Accessibility & contrast

On white

3.40

#1598B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.18

#1598B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1598B4

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1598B4	#FFFFFF	#000000	##000000
##1598B4	1.00	3.40	6.18	6.18
#FFFFFF	3.40	1.00	21.00	21.00
#000000	6.18	21.00	1.00	1.00
##000000	6.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8693B6

Deuteranopia (green-blind)

#7285B4

Tritanopia (blue-blind)

#00A2A1

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #1598b4;
/* rgb */ color: rgb(21, 152, 180);
/* oklch */ color: oklch(62.8% 0.109 217.7);

Tailwind

colors: {
  custom: {
    50: '#74b6ca',
    500: '#1598b4',
    950: '#000000',
  },
}

SCSS

$custom: #1598b4;
$custom-light: #74b6ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1598b4",
  "rgb": {
    "r": 21,
    "g": 152,
    "b": 180
  },
  "hsl": {
    "h": 190.566,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.62842,
    "c": 0.10898,
    "h": 217.7
  },
  "luminance": 0.25911
}

Semantic roles & 50–950 ramp

primary

#1598B4

secondary

#CF6B56

accent

#5532F6

background

#F7FBFC

surface

#EEF6F8

border

#C9D0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #1598B4

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

Preview Lab → · Contrast checker → · Palette generator →