#1588B4#1588B4

#1588B4 is a mid, moderate cyan. Relative luminance 0.211; OKLCH L 58.9% C 0.114 H 231.1°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#1588B4
RGB	rgb(21, 136, 180)
HSL	hsl(197, 79%, 39%)
HSV	hsv(197, 88%, 71%)
CMYK	cmyk(88.3%, 24.4%, 0%, 29.4%)
CIE-LAB	lab(53.02, -13.86, -31.43)
CIE-LCH	lch(53.02, 34.35, 246.20°)
OKLab	oklab(58.88% -0.0715 -0.0887)
OKLCH	oklch(58.88% 0.114 231.1)
XYZ	xyz(17.3482, 21.0608, 46.3219)
Luminance	0.2106 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1588B4 #B44115

analogous

#15B491 #1588B4 #1539B4

triadic

#1588B4 #B41588 #88B415

tetradic

#1588B4 #9115B4 #B44115 #39B415

square

#1588B4 #9115B4 #B44115 #39B415

split-complementary

#1588B4 #B41539 #B49115

monochromatic

#083546 #0F5F7D #1588B4 #21AFE5 #58C3EC

Accessibility & contrast

On white

4.03

#1588B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#1588B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1588B4

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1588B4	#FFFFFF	#000000	##000000
##1588B4	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7286B6

Deuteranopia (green-blind)

#5D78B3

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #1588b4;
/* rgb */ color: rgb(21, 136, 180);
/* oklch */ color: oklch(58.9% 0.114 231.1);

Tailwind

colors: {
  custom: {
    50: '#73aaca',
    500: '#1588b4',
    950: '#000000',
  },
}

SCSS

$custom: #1588b4;
$custom-light: #73aaca;
$custom-dark: #000000;

JSON

{
  "hex": "#1588b4",
  "rgb": {
    "r": 21,
    "g": 136,
    "b": 180
  },
  "hsl": {
    "h": 196.604,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.58881,
    "c": 0.11395,
    "h": 231.1
  },
  "luminance": 0.21063
}

Semantic roles & 50–950 ramp

primary

#1588B4

secondary

#CF7856

accent

#6832F6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1588B4

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

Preview Lab → · Contrast checker → · Palette generator →