#28739B#28739B

#28739B is a mid, moderate cyan. Relative luminance 0.151; OKLCH L 52.8% C 0.096 H 236.2°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#28739B
RGB	rgb(40, 115, 155)
HSL	hsl(201, 59%, 38%)
HSV	hsv(201, 74%, 61%)
CMYK	cmyk(74.2%, 25.8%, 0%, 39.2%)
CIE-LAB	lab(45.74, -9.04, -28.21)
CIE-LCH	lch(45.74, 29.62, 252.24°)
OKLab	oklab(52.81% -0.0531 -0.0795)
OKLCH	oklch(52.81% 0.096 236.2)
XYZ	xyz(12.9199, 15.0777, 33.2334)
Luminance	0.1508 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28739B #9B5028

analogous

#289B89 #28739B #28399B

triadic

#28739B #9B2873 #739B28

tetradic

#28739B #89289B #9B5028 #399B28

square

#28739B #89289B #9B5028 #399B28

split-complementary

#28739B #9B2839 #9B8928

monochromatic

#0F2B3A #1B4F6A #28739B #3597CB #66B0D7

Accessibility & contrast

On white

5.23

#28739B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#28739B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #28739B

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28739B	#FFFFFF	#000000	##FFFFFF
##28739B	1.00	5.23	4.02	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60729D

Deuteranopia (green-blind)

#50679A

Tritanopia (blue-blind)

#007D81

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #28739b;
/* rgb */ color: rgb(40, 115, 155);
/* oklch */ color: oklch(52.8% 0.096 236.2);

Tailwind

colors: {
  custom: {
    50: '#729bb8',
    500: '#28739b',
    950: '#000000',
  },
}

SCSS

$custom: #28739b;
$custom-light: #729bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#28739b",
  "rgb": {
    "r": 40,
    "g": 115,
    "b": 155
  },
  "hsl": {
    "h": 200.87,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.52809,
    "c": 0.09562,
    "h": 236.2
  },
  "luminance": 0.15079
}

Semantic roles & 50–950 ramp

primary

#28739B

secondary

#BD8161

accent

#7C46E2

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #28739B

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

Preview Lab → · Contrast checker → · Palette generator →