#17537F#17537F

#17537F is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.7% C 0.094 H 245.3°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#17537F
RGB	rgb(23, 83, 127)
HSL	hsl(205, 69%, 29%)
HSV	hsv(205, 82%, 50%)
CMYK	cmyk(81.9%, 34.6%, 0%, 50.2%)
CIE-LAB	lab(33.77, -2.24, -30.13)
CIE-LCH	lch(33.77, 30.21, 265.75°)
OKLab	oklab(42.74% -0.0395 -0.0856)
OKLCH	oklch(42.74% 0.094 245.3)
XYZ	xyz(7.2759, 7.9001, 21.2160)
Luminance	0.0790 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17537F #7F4317

analogous

#177F77 #17537F #171F7F

triadic

#17537F #7F1753 #537F17

tetradic

#17537F #77177F #7F4317 #1F7F17

square

#17537F #77177F #7F4317 #1F7F17

split-complementary

#17537F #7F171F #7F7717

monochromatic

#05111A #0E314B #17537F #2075B3 #3695DB

Accessibility & contrast

On white

8.14

#17537F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#17537F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17537F

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17537F	#FFFFFF	#000000	##FFFFFF
##17537F	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5581

Deuteranopia (green-blind)

#304B7E

Tritanopia (blue-blind)

#005E63

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #17537f;
/* rgb */ color: rgb(23, 83, 127);
/* oklch */ color: oklch(42.7% 0.094 245.3);

Tailwind

colors: {
  custom: {
    50: '#6683a4',
    500: '#17537f',
    950: '#000000',
  },
}

SCSS

$custom: #17537f;
$custom-light: #6683a4;
$custom-dark: #000000;

JSON

{
  "hex": "#17537f",
  "rgb": {
    "r": 23,
    "g": 83,
    "b": 127
  },
  "hsl": {
    "h": 205.385,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.42743,
    "c": 0.09428,
    "h": 245.3
  },
  "luminance": 0.07901
}

Semantic roles & 50–950 ramp

primary

#17537F

secondary

#B4703E

accent

#863CEC

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #17537F

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

Preview Lab → · Contrast checker → · Palette generator →