#15587B#15587B

#15587B is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.7% C 0.086 H 237.1°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).

Color values

HEX	#15587B
RGB	rgb(21, 88, 123)
HSL	hsl(201, 71%, 28%)
HSV	hsv(201, 83%, 48%)
CMYK	cmyk(82.9%, 28.5%, 0%, 51.8%)
CIE-LAB	lab(35.14, -7.19, -25.52)
CIE-LCH	lch(35.14, 26.51, 254.27°)
OKLab	oklab(43.74% -0.0467 -0.0721)
OKLCH	oklch(43.74% 0.086 237.1)
XYZ	xyz(7.3727, 8.5680, 20.0003)
Luminance	0.0857 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15587B #7B3815

analogous

#157B6B #15587B #15257B

triadic

#15587B #7B1558 #587B15

tetradic

#15587B #6B157B #7B3815 #257B15

square

#15587B #6B157B #7B3815 #257B15

split-complementary

#15587B #7B1525 #7B6B15

monochromatic

#04131A #0C3347 #15587B #1E7DAF #2FA0DB

Accessibility & contrast

On white

7.74

#15587B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#15587B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15587B

7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15587B	#FFFFFF	#000000	##FFFFFF
##15587B	1.00	7.74	2.71	7.74
#FFFFFF	7.74	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47587D

Deuteranopia (green-blind)

#394E7A

Tritanopia (blue-blind)

#006164

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #15587b;
/* rgb */ color: rgb(21, 88, 123);
/* oklch */ color: oklch(43.7% 0.086 237.1);

Tailwind

colors: {
  custom: {
    50: '#6587a1',
    500: '#15587b',
    950: '#000000',
  },
}

SCSS

$custom: #15587b;
$custom-light: #6587a1;
$custom-dark: #000000;

JSON

{
  "hex": "#15587b",
  "rgb": {
    "r": 21,
    "g": 88,
    "b": 123
  },
  "hsl": {
    "h": 200.588,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.43742,
    "c": 0.08593,
    "h": 237.1
  },
  "luminance": 0.08569
}

Semantic roles & 50–950 ramp

primary

#15587B

secondary

#B0643B

accent

#783AEE

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0F

muted

#7A7C7E

Preview Lab

Preview with #15587B

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

Preview Lab → · Contrast checker → · Palette generator →