#28657B#28657B

#28657B is a mid, moderate cyan. Relative luminance 0.112; OKLCH L 47.7% C 0.071 H 225.2°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#28657B
RGB	rgb(40, 101, 123)
HSL	hsl(196, 51%, 32%)
HSV	hsv(196, 67%, 48%)
CMYK	cmyk(67.5%, 17.9%, 0%, 51.8%)
CIE-LAB	lab(39.89, -12.17, -18.10)
CIE-LCH	lch(39.89, 21.81, 236.09°)
OKLab	oklab(47.69% -0.0503 -0.0505)
OKLCH	oklch(47.69% 0.071 225.2)
XYZ	xyz(9.1025, 11.1876, 20.4148)
Luminance	0.1119 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28657B #7B3E28

analogous

#287B68 #28657B #283B7B

triadic

#28657B #7B2865 #657B28

tetradic

#28657B #68287B #7B3E28 #3B7B28

square

#28657B #68287B #7B3E28 #3B7B28

split-complementary

#28657B #7B283B #7B6828

monochromatic

#0A191F #193F4D #28657B #378BA9 #56AAC8

Accessibility & contrast

On white

6.49

#28657B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#28657B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #28657B

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28657B	#FFFFFF	#000000	##FFFFFF
##28657B	1.00	6.49	3.24	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59637C

Deuteranopia (green-blind)

#4D5A7B

Tritanopia (blue-blind)

#006C6C

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #28657b;
/* rgb */ color: rgb(40, 101, 123);
/* oklch */ color: oklch(47.7% 0.071 225.2);

Tailwind

colors: {
  custom: {
    50: '#6c91a1',
    500: '#28657b',
    950: '#000000',
  },
}

SCSS

$custom: #28657b;
$custom-light: #6c91a1;
$custom-dark: #000000;

JSON

{
  "hex": "#28657b",
  "rgb": {
    "r": 40,
    "g": 101,
    "b": 123
  },
  "hsl": {
    "h": 195.904,
    "s": 50.92,
    "l": 31.961
  },
  "oklch": {
    "l": 0.47685,
    "c": 0.07126,
    "h": 225.2
  },
  "luminance": 0.11189
}

Semantic roles & 50–950 ramp

primary

#28657B

secondary

#AD6A52

accent

#734DDA

background

#F6F8F9

surface

#ECF0F2

border

#C7CBCC

text

#070C0F

muted

#7A7D7E

Preview Lab

Preview with #28657B

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

Preview Lab → · Contrast checker → · Palette generator →