#1B758F#1B758F

#1B758F is a mid, moderate cyan. Relative luminance 0.149; OKLCH L 52.4% C 0.089 H 222.4°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#1B758F
RGB	rgb(27, 117, 143)
HSL	hsl(193, 68%, 33%)
HSV	hsv(193, 81%, 56%)
CMYK	cmyk(81.1%, 18.2%, 0%, 43.9%)
CIE-LAB	lab(45.55, -16.08, -21.43)
CIE-LCH	lch(45.55, 26.80, 233.12°)
OKLab	oklab(52.4% -0.0657 -0.0601)
OKLCH	oklch(52.4% 0.089 222.4)
XYZ	xyz(11.7691, 14.9373, 28.2442)
Luminance	0.1494 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B758F #8F351B

analogous

#1B8F6F #1B758F #1B3B8F

triadic

#1B758F #8F1B75 #758F1B

tetradic

#1B758F #6F1B8F #8F351B #3B8F1B

square

#1B758F #6F1B8F #8F351B #3B8F1B

split-complementary

#1B758F #8F1B3B #8F6F1B

monochromatic

#082128 #114B5C #1B758F #259FC2 #48BBDC

Accessibility & contrast

On white

5.27

#1B758F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#1B758F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B758F

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B758F	#FFFFFF	#000000	##FFFFFF
##1B758F	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667290

Deuteranopia (green-blind)

#57678F

Tritanopia (blue-blind)

#007D7D

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #1b758f;
/* rgb */ color: rgb(27, 117, 143);
/* oklch */ color: oklch(52.4% 0.089 222.4);

Tailwind

colors: {
  custom: {
    50: '#6c9db0',
    500: '#1b758f',
    950: '#000000',
  },
}

SCSS

$custom: #1b758f;
$custom-light: #6c9db0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b758f",
  "rgb": {
    "r": 27,
    "g": 117,
    "b": 143
  },
  "hsl": {
    "h": 193.448,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.52397,
    "c": 0.08904,
    "h": 222.4
  },
  "luminance": 0.14939
}

Semantic roles & 50–950 ramp

primary

#1B758F

secondary

#BE6248

accent

#643DEB

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #1B758F

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

Preview Lab → · Contrast checker → · Palette generator →