#28438B#28438B

#28438B is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.4% C 0.124 H 265.6°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#28438B
RGB	rgb(40, 67, 139)
HSL	hsl(224, 55%, 35%)
HSV	hsv(224, 71%, 55%)
CMYK	cmyk(71.2%, 51.8%, 0%, 45.5%)
CIE-LAB	lab(30.23, 15.59, -43.17)
CIE-LCH	lch(30.23, 45.90, 289.86°)
OKLab	oklab(40.41% -0.0094 -0.1239)
OKLCH	oklch(40.41% 0.124 265.6)
XYZ	xyz(7.5408, 6.3287, 25.2453)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28438B #8B7028

analogous

#28758B #28438B #3E288B

triadic

#28438B #8B2843 #438B28

tetradic

#28438B #8B2875 #8B7028 #288B3E

square

#28438B #8B2875 #8B7028 #288B3E

split-complementary

#28438B #8B3E28 #758B28

monochromatic

#0D152C #1A2C5B #28438B #365ABB #5D7CD0

Accessibility & contrast

On white

9.27

#28438B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#28438B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28438B

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28438B	#FFFFFF	#000000	##FFFFFF
##28438B	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184C8E

Deuteranopia (green-blind)

#00438A

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #28438b;
/* rgb */ color: rgb(40, 67, 139);
/* oklch */ color: oklch(40.4% 0.124 265.6);

Tailwind

colors: {
  custom: {
    50: '#6f76ad',
    500: '#28438b',
    950: '#000000',
  },
}

SCSS

$custom: #28438b;
$custom-light: #6f76ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28438b",
  "rgb": {
    "r": 40,
    "g": 67,
    "b": 139
  },
  "hsl": {
    "h": 223.636,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.40406,
    "c": 0.1243,
    "h": 265.6
  },
  "luminance": 0.0633
}

Semantic roles & 50–950 ramp

primary

#28438B

secondary

#B69C59

accent

#B649DF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #28438B

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

Preview Lab → · Contrast checker → · Palette generator →