#28397E#28397E

#28397E is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.2% C 0.118 H 269.4°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#28397E
RGB	rgb(40, 57, 126)
HSL	hsl(228, 52%, 33%)
HSV	hsv(228, 68%, 49%)
CMYK	cmyk(68.3%, 54.8%, 0%, 50.6%)
CIE-LAB	lab(26.40, 17.46, -41.26)
CIE-LCH	lch(26.40, 44.80, 292.94°)
OKLab	oklab(37.2% -0.0012 -0.1185)
OKLCH	oklch(37.2% 0.118 269.4)
XYZ	xyz(6.1028, 4.8832, 20.3555)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28397E #7E6D28

analogous

#28647E #28397E #42287E

triadic

#28397E #7E2839 #397E28

tetradic

#28397E #7E2864 #7E6D28 #287E42

square

#28397E #7E2864 #7E6D28 #287E42

split-complementary

#28397E #7E4228 #647E28

monochromatic

#0B0F21 #192450 #28397E #374EAC #576DCA

Accessibility & contrast

On white

10.62

#28397E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#28397E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28397E

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28397E	#FFFFFF	#000000	##FFFFFF
##28397E	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4280

Deuteranopia (green-blind)

#003B7D

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #28397e;
/* rgb */ color: rgb(40, 57, 126);
/* oklch */ color: oklch(37.2% 0.118 269.4);

Tailwind

colors: {
  custom: {
    50: '#6d6fa4',
    500: '#28397e',
    950: '#000000',
  },
}

SCSS

$custom: #28397e;
$custom-light: #6d6fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#28397e",
  "rgb": {
    "r": 40,
    "g": 57,
    "b": 126
  },
  "hsl": {
    "h": 228.14,
    "s": 51.807,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37204,
    "c": 0.11849,
    "h": 269.4
  },
  "luminance": 0.04884
}

Semantic roles & 50–950 ramp

primary

#28397E

secondary

#AF9D53

accent

#BF4DDB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #28397E

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

Preview Lab → · Contrast checker → · Palette generator →