#1B738F#1B738F

#1B738F is a mid, moderate cyan. Relative luminance 0.145; OKLCH L 51.9% C 0.090 H 224.6°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B738F
RGB	rgb(27, 115, 143)
HSL	hsl(194, 68%, 33%)
HSV	hsv(194, 81%, 56%)
CMYK	cmyk(81.1%, 19.6%, 0%, 43.9%)
CIE-LAB	lab(44.91, -14.96, -22.42)
CIE-LCH	lch(44.91, 26.95, 236.29°)
OKLab	oklab(51.88% -0.0637 -0.0629)
OKLCH	oklch(51.88% 0.09 224.6)
XYZ	xyz(11.5386, 14.4762, 28.1673)
Luminance	0.1448 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B738F #8F371B

analogous

#1B8F71 #1B738F #1B398F

triadic

#1B738F #8F1B73 #738F1B

tetradic

#1B738F #711B8F #8F371B #398F1B

square

#1B738F #711B8F #8F371B #398F1B

split-complementary

#1B738F #8F1B39 #8F711B

monochromatic

#082028 #114A5C #1B738F #259CC2 #48B9DC

Accessibility & contrast

On white

5.39

#1B738F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#1B738F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B738F

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B738F	#FFFFFF	#000000	##FFFFFF
##1B738F	1.00	5.39	3.90	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#637090

Deuteranopia (green-blind)

#54658F

Tritanopia (blue-blind)

#007B7C

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #1b738f;
/* rgb */ color: rgb(27, 115, 143);
/* oklch */ color: oklch(51.9% 0.090 224.6);

Tailwind

colors: {
  custom: {
    50: '#6c9bb0',
    500: '#1b738f',
    950: '#000000',
  },
}

SCSS

$custom: #1b738f;
$custom-light: #6c9bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b738f",
  "rgb": {
    "r": 27,
    "g": 115,
    "b": 143
  },
  "hsl": {
    "h": 194.483,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.51884,
    "c": 0.08954,
    "h": 224.6
  },
  "luminance": 0.14478
}

Semantic roles & 50–950 ramp

primary

#1B738F

secondary

#BE6448

accent

#673DEB

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #1B738F

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

Preview Lab → · Contrast checker → · Palette generator →