#28738B#28738B

#28738B is a mid, moderate cyan. Relative luminance 0.146; OKLCH L 52.0% C 0.081 H 223.1°. Best body text is #FFFFFF at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#28738B
RGB	rgb(40, 115, 139)
HSL	hsl(195, 55%, 35%)
HSV	hsv(195, 71%, 55%)
CMYK	cmyk(71.2%, 17.3%, 0%, 45.5%)
CIE-LAB	lab(45.05, -14.66, -19.80)
CIE-LCH	lch(45.05, 24.64, 233.48°)
OKLab	oklab(52.03% -0.0592 -0.0553)
OKLCH	oklch(52.03% 0.081 223.1)
XYZ	xyz(11.6641, 14.5754, 26.6197)
Luminance	0.1458 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28738B #8B4028

analogous

#288B71 #28738B #28428B

triadic

#28738B #8B2873 #738B28

tetradic

#28738B #71288B #8B4028 #428B28

square

#28738B #71288B #8B4028 #428B28

split-complementary

#28738B #8B2842 #8B7128

monochromatic

#0D242C #1A4C5B #28738B #369ABB #5DB4D0

Accessibility & contrast

On white

5.36

#28738B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.92

#28738B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #28738B

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28738B	#FFFFFF	#000000	##FFFFFF
##28738B	1.00	5.36	3.92	5.36
#FFFFFF	5.36	1.00	21.00	1.00
#000000	3.92	21.00	1.00	21.00
##FFFFFF	5.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#65708C

Deuteranopia (green-blind)

#58668B

Tritanopia (blue-blind)

#007A7B

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #28738b;
/* rgb */ color: rgb(40, 115, 139);
/* oklch */ color: oklch(52.0% 0.081 223.1);

Tailwind

colors: {
  custom: {
    50: '#709bad',
    500: '#28738b',
    950: '#000000',
  },
}

SCSS

$custom: #28738b;
$custom-light: #709bad;
$custom-dark: #000000;

JSON

{
  "hex": "#28738b",
  "rgb": {
    "r": 40,
    "g": 115,
    "b": 139
  },
  "hsl": {
    "h": 194.545,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.52027,
    "c": 0.08106,
    "h": 223.1
  },
  "luminance": 0.14577
}

Semantic roles & 50–950 ramp

primary

#28738B

secondary

#B67059

accent

#6D49DF

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #28738B

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

Preview Lab → · Contrast checker → · Palette generator →