#28257D#28257D

#28257D is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.2% C 0.143 H 276.7°. Best body text is #FFFFFF at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#28257D
RGB	rgb(40, 37, 125)
HSL	hsl(242, 54%, 32%)
HSV	hsv(242, 70%, 49%)
CMYK	cmyk(68%, 70.4%, 0%, 51%)
CIE-LAB	lab(21.04, 30.63, -49.36)
CIE-LCH	lch(21.04, 58.09, 301.82°)
OKLab	oklab(33.21% 0.0167 -0.1425)
OKLCH	oklch(33.21% 0.143 276.7)
XYZ	xyz(5.2371, 3.2545, 19.7502)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28257D #7A7D25

analogous

#254E7D #28257D #54257D

triadic

#28257D #7D2825 #257D28

tetradic

#28257D #7D254E #7A7D25 #257D54

square

#28257D #7D254E #7A7D25 #257D54

split-complementary

#28257D #7D5425 #4E7D25

monochromatic

#0A091F #19174E #28257D #3733AC #5551CB

Accessibility & contrast

On white

12.72

#28257D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#28257D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28257D

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28257D	#FFFFFF	#000000	##FFFFFF
##28257D	1.00	12.72	1.65	12.72
#FFFFFF	12.72	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003680

Deuteranopia (green-blind)

#002F7B

Tritanopia (blue-blind)

#003C4E

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #28257d;
/* rgb */ color: rgb(40, 37, 125);
/* oklch */ color: oklch(33.2% 0.143 276.7);

Tailwind

colors: {
  custom: {
    50: '#6e60a4',
    500: '#28257d',
    950: '#000000',
  },
}

SCSS

$custom: #28257d;
$custom-light: #6e60a4;
$custom-dark: #000000;

JSON

{
  "hex": "#28257d",
  "rgb": {
    "r": 40,
    "g": 37,
    "b": 125
  },
  "hsl": {
    "h": 242.045,
    "s": 54.321,
    "l": 31.765
  },
  "oklch": {
    "l": 0.33212,
    "c": 0.14344,
    "h": 276.7
  },
  "luminance": 0.03255
}

Semantic roles & 50–950 ramp

primary

#28257D

secondary

#ACAF4F

accent

#DE4AD9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08050F

muted

#7B797F

Preview Lab

Preview with #28257D

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

Preview Lab → · Contrast checker → · Palette generator →