#17587B#17587B

#17587B is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.8% C 0.085 H 237.5°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#17587B
RGB	rgb(23, 88, 123)
HSL	hsl(201, 68%, 29%)
HSV	hsv(201, 81%, 48%)
CMYK	cmyk(81.3%, 28.5%, 0%, 51.8%)
CIE-LAB	lab(35.18, -6.96, -25.45)
CIE-LCH	lch(35.18, 26.38, 254.71°)
OKLab	oklab(43.79% -0.0458 -0.0719)
OKLCH	oklch(43.79% 0.085 237.5)
XYZ	xyz(7.4168, 8.5908, 20.0023)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17587B #7B3A17

analogous

#177B6C #17587B #17267B

triadic

#17587B #7B1758 #587B17

tetradic

#17587B #6C177B #7B3A17 #267B17

square

#17587B #6C177B #7B3A17 #267B17

split-complementary

#17587B #7B1726 #7B6C17

monochromatic

#05121A #0D3347 #17587B #217DAF #339FD9

Accessibility & contrast

On white

7.73

#17587B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#17587B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17587B

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17587B	#FFFFFF	#000000	##FFFFFF
##17587B	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47587D

Deuteranopia (green-blind)

#3A4F7A

Tritanopia (blue-blind)

#006164

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #17587b;
/* rgb */ color: rgb(23, 88, 123);
/* oklch */ color: oklch(43.8% 0.085 237.5);

Tailwind

colors: {
  custom: {
    50: '#6587a1',
    500: '#17587b',
    950: '#000000',
  },
}

SCSS

$custom: #17587b;
$custom-light: #6587a1;
$custom-dark: #000000;

JSON

{
  "hex": "#17587b",
  "rgb": {
    "r": 23,
    "g": 88,
    "b": 123
  },
  "hsl": {
    "h": 201,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.43791,
    "c": 0.08525,
    "h": 237.5
  },
  "luminance": 0.08592
}

Semantic roles & 50–950 ramp

primary

#17587B

secondary

#B0663E

accent

#7A3CEB

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0F

muted

#7A7C7E

Preview Lab

Preview with #17587B

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

Preview Lab → · Contrast checker → · Palette generator →