#28588B#28588B

#28588B is a mid, moderate cyan. Relative luminance 0.093; OKLCH L 45.3% C 0.099 H 252.1°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#28588B
RGB	rgb(40, 88, 139)
HSL	hsl(211, 55%, 35%)
HSV	hsv(211, 71%, 55%)
CMYK	cmyk(71.2%, 36.7%, 0%, 45.5%)
CIE-LAB	lab(36.54, 1.61, -33.07)
CIE-LCH	lch(36.54, 33.11, 272.79°)
OKLab	oklab(45.29% -0.0304 -0.094)
OKLCH	oklch(45.29% 0.099 252.1)
XYZ	xyz(9.0233, 9.2937, 25.7394)
Luminance	0.0930 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28588B #8B5B28

analogous

#28898B #28588B #2A288B

triadic

#28588B #8B2858 #588B28

tetradic

#28588B #8B2889 #8B5B28 #288B2A

square

#28588B #8B2889 #8B5B28 #288B2A

split-complementary

#28588B #8B2A28 #898B28

monochromatic

#0D1C2C #1A3A5B #28588B #3676BB #5D95D0

Accessibility & contrast

On white

7.35

#28588B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#28588B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28588B

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28588B	#FFFFFF	#000000	##FFFFFF
##28588B	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415B8D

Deuteranopia (green-blind)

#33528A

Tritanopia (blue-blind)

#00646B

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #28588b;
/* rgb */ color: rgb(40, 88, 139);
/* oklch */ color: oklch(45.3% 0.099 252.1);

Tailwind

colors: {
  custom: {
    50: '#6e86ad',
    500: '#28588b',
    950: '#000000',
  },
}

SCSS

$custom: #28588b;
$custom-light: #6e86ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28588b",
  "rgb": {
    "r": 40,
    "g": 88,
    "b": 139
  },
  "hsl": {
    "h": 210.909,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.45286,
    "c": 0.09875,
    "h": 252.1
  },
  "luminance": 0.09295
}

Semantic roles & 50–950 ramp

primary

#28588B

secondary

#B68959

accent

#9649DF

background

#F7F8FA

surface

#EDEFF4

border

#C8CACE

text

#080B10

muted

#7B7C7F

Preview Lab

Preview with #28588B

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

Preview Lab → · Contrast checker → · Palette generator →