#28639B#28639B

#28639B is a mid, moderate cyan. Relative luminance 0.117; OKLCH L 48.9% C 0.109 H 250.1°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#28639B
RGB	rgb(40, 99, 155)
HSL	hsl(209, 59%, 38%)
HSV	hsv(209, 74%, 61%)
CMYK	cmyk(74.2%, 36.1%, 0%, 39.2%)
CIE-LAB	lab(40.80, 0.67, -35.97)
CIE-LCH	lch(40.80, 35.98, 271.07°)
OKLab	oklab(48.91% -0.0371 -0.1023)
OKLCH	oklch(48.91% 0.109 250.1)
XYZ	xyz(11.2511, 11.7401, 32.6771)
Luminance	0.1174 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28639B #9B6028

analogous

#289B99 #28639B #282A9B

triadic

#28639B #9B2863 #639B28

tetradic

#28639B #99289B #9B6028 #2A9B28

square

#28639B #99289B #9B6028 #2A9B28

split-complementary

#28639B #9B282A #9B9928

monochromatic

#0F253A #1B446A #28639B #3582CB #66A0D7

Accessibility & contrast

On white

6.27

#28639B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#28639B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #28639B

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28639B	#FFFFFF	#000000	##FFFFFF
##28639B	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49669D

Deuteranopia (green-blind)

#395B9A

Tritanopia (blue-blind)

#007077

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #28639b;
/* rgb */ color: rgb(40, 99, 155);
/* oklch */ color: oklch(48.9% 0.109 250.1);

Tailwind

colors: {
  custom: {
    50: '#728fb9',
    500: '#28639b',
    950: '#000000',
  },
}

SCSS

$custom: #28639b;
$custom-light: #728fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#28639b",
  "rgb": {
    "r": 40,
    "g": 99,
    "b": 155
  },
  "hsl": {
    "h": 209.217,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.48906,
    "c": 0.10879,
    "h": 250.1
  },
  "luminance": 0.11741
}

Semantic roles & 50–950 ramp

primary

#28639B

secondary

#BD8E61

accent

#9246E2

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090C11

muted

#7B7D80

Preview Lab

Preview with #28639B

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

Preview Lab → · Contrast checker → · Palette generator →