#15597B#15597B

#15597B is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.0% C 0.085 H 236.0°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#15597B
RGB	rgb(21, 89, 123)
HSL	hsl(200, 71%, 28%)
HSV	hsv(200, 83%, 48%)
CMYK	cmyk(82.9%, 27.6%, 0%, 51.8%)
CIE-LAB	lab(35.47, -7.80, -25.01)
CIE-LCH	lch(35.47, 26.20, 252.67°)
OKLab	oklab(44% -0.0477 -0.0706)
OKLCH	oklch(44% 0.085 236)
XYZ	xyz(7.4554, 8.7333, 20.0278)
Luminance	0.0873 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15597B #7B3715

analogous

#157B6A #15597B #15267B

triadic

#15597B #7B1559 #597B15

tetradic

#15597B #6A157B #7B3715 #267B15

square

#15597B #6A157B #7B3715 #267B15

split-complementary

#15597B #7B1526 #7B6A15

monochromatic

#04131A #0C3347 #15597B #1E7FAF #2FA2DB

Accessibility & contrast

On white

7.65

#15597B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#15597B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15597B

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15597B	#FFFFFF	#000000	##FFFFFF
##15597B	1.00	7.65	2.75	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49597D

Deuteranopia (green-blind)

#3B4F7A

Tritanopia (blue-blind)

#006265

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #15597b;
/* rgb */ color: rgb(21, 89, 123);
/* oklch */ color: oklch(44.0% 0.085 236.0);

Tailwind

colors: {
  custom: {
    50: '#6587a1',
    500: '#15597b',
    950: '#000000',
  },
}

SCSS

$custom: #15597b;
$custom-light: #6587a1;
$custom-dark: #000000;

JSON

{
  "hex": "#15597b",
  "rgb": {
    "r": 21,
    "g": 89,
    "b": 123
  },
  "hsl": {
    "h": 200,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.44002,
    "c": 0.08524,
    "h": 236
  },
  "luminance": 0.08734
}

Semantic roles & 50–950 ramp

primary

#15597B

secondary

#B0623B

accent

#763AEE

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0F

muted

#7A7C7E

Preview Lab

Preview with #15597B

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

Preview Lab → · Contrast checker → · Palette generator →