#28637B#28637B

#28637B is a mid, moderate cyan. Relative luminance 0.108; OKLCH L 47.2% C 0.072 H 228.1°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#28637B
RGB	rgb(40, 99, 123)
HSL	hsl(197, 51%, 32%)
HSV	hsv(197, 67%, 48%)
CMYK	cmyk(67.5%, 19.5%, 0%, 51.8%)
CIE-LAB	lab(39.25, -11.00, -19.09)
CIE-LCH	lch(39.25, 22.04, 240.06°)
OKLab	oklab(47.17% -0.048 -0.0534)
OKLCH	oklch(47.17% 0.072 228.1)
XYZ	xyz(8.9106, 10.8039, 20.3508)
Luminance	0.1080 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28637B #7B4028

analogous

#287B6A #28637B #283A7B

triadic

#28637B #7B2863 #637B28

tetradic

#28637B #6A287B #7B4028 #3A7B28

square

#28637B #6A287B #7B4028 #3A7B28

split-complementary

#28637B #7B283A #7B6A28

monochromatic

#0A191F #193E4D #28637B #3788A9 #56A7C8

Accessibility & contrast

On white

6.64

#28637B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#28637B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #28637B

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28637B	#FFFFFF	#000000	##FFFFFF
##28637B	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#56617C

Deuteranopia (green-blind)

#4B597B

Tritanopia (blue-blind)

#006A6B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #28637b;
/* rgb */ color: rgb(40, 99, 123);
/* oklch */ color: oklch(47.2% 0.072 228.1);

Tailwind

colors: {
  custom: {
    50: '#6c8fa1',
    500: '#28637b',
    950: '#000000',
  },
}

SCSS

$custom: #28637b;
$custom-light: #6c8fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#28637b",
  "rgb": {
    "r": 40,
    "g": 99,
    "b": 123
  },
  "hsl": {
    "h": 197.349,
    "s": 50.92,
    "l": 31.961
  },
  "oklch": {
    "l": 0.47168,
    "c": 0.07177,
    "h": 228.1
  },
  "luminance": 0.10805
}

Semantic roles & 50–950 ramp

primary

#28637B

secondary

#AD6C52

accent

#764DDA

background

#F6F8F9

surface

#ECF0F2

border

#C7CBCC

text

#070C0F

muted

#7A7D7E

Preview Lab

Preview with #28637B

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

Preview Lab → · Contrast checker → · Palette generator →