#28397D#28397D

#28397D is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.117 H 269.4°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#28397D
RGB	rgb(40, 57, 125)
HSL	hsl(228, 52%, 32%)
HSV	hsv(228, 68%, 49%)
CMYK	cmyk(68%, 54.4%, 0%, 51%)
CIE-LAB	lab(26.32, 17.08, -40.75)
CIE-LCH	lch(26.32, 44.18, 292.74°)
OKLab	oklab(37.12% -0.0012 -0.117)
OKLCH	oklch(37.12% 0.117 269.4)
XYZ	xyz(6.0386, 4.8575, 20.0174)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28397D #7D6C28

analogous

#28647D #28397D #42287D

triadic

#28397D #7D2839 #397D28

tetradic

#28397D #7D2864 #7D6C28 #287D42

square

#28397D #7D2864 #7D6C28 #287D42

split-complementary

#28397D #7D4228 #647D28

monochromatic

#0A0F20 #19244F #28397D #374EAB #566DC9

Accessibility & contrast

On white

10.65

#28397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#28397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28397D

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28397D	#FFFFFF	#000000	##FFFFFF
##28397D	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E427F

Deuteranopia (green-blind)

#003B7C

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #28397d;
/* rgb */ color: rgb(40, 57, 125);
/* oklch */ color: oklch(37.1% 0.117 269.4);

Tailwind

colors: {
  custom: {
    50: '#6c6fa3',
    500: '#28397d',
    950: '#000000',
  },
}

SCSS

$custom: #28397d;
$custom-light: #6c6fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#28397d",
  "rgb": {
    "r": 40,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 228,
    "s": 51.515,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37124,
    "c": 0.117,
    "h": 269.4
  },
  "luminance": 0.04858
}

Semantic roles & 50–950 ramp

primary

#28397D

secondary

#AE9C53

accent

#BF4DDB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #28397D

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

Preview Lab → · Contrast checker → · Palette generator →