#28397C#28397C

#28397C is a dark, moderate blue. Relative luminance 0.048; OKLCH L 37.0% C 0.116 H 269.3°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#28397C
RGB	rgb(40, 57, 124)
HSL	hsl(228, 51%, 32%)
HSV	hsv(228, 68%, 49%)
CMYK	cmyk(67.7%, 54%, 0%, 51.4%)
CIE-LAB	lab(26.25, 16.69, -40.24)
CIE-LCH	lch(26.25, 43.56, 292.53°)
OKLab	oklab(37.05% -0.0013 -0.1155)
OKLCH	oklch(37.05% 0.116 269.3)
XYZ	xyz(5.9751, 4.8321, 19.6827)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28397C #7C6B28

analogous

#28637C #28397C #41287C

triadic

#28397C #7C2839 #397C28

tetradic

#28397C #7C2863 #7C6B28 #287C41

square

#28397C #7C2863 #7C6B28 #287C41

split-complementary

#28397C #7C4128 #637C28

monochromatic

#0A0E1F #19244E #28397C #374EAA #566DC8

Accessibility & contrast

On white

10.68

#28397C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#28397C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28397C

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28397C	#FFFFFF	#000000	##FFFFFF
##28397C	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10427E

Deuteranopia (green-blind)

#003A7B

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #28397c;
/* rgb */ color: rgb(40, 57, 124);
/* oklch */ color: oklch(37.0% 0.116 269.3);

Tailwind

colors: {
  custom: {
    50: '#6c6fa2',
    500: '#28397c',
    950: '#000000',
  },
}

SCSS

$custom: #28397c;
$custom-light: #6c6fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#28397c",
  "rgb": {
    "r": 40,
    "g": 57,
    "b": 124
  },
  "hsl": {
    "h": 227.857,
    "s": 51.22,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37045,
    "c": 0.1155,
    "h": 269.3
  },
  "luminance": 0.04833
}

Semantic roles & 50–950 ramp

primary

#28397C

secondary

#AD9B52

accent

#BE4DDB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #28397C

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

Preview Lab → · Contrast checker → · Palette generator →