#28257E#28257E

#28257E is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.3% C 0.145 H 276.6°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#28257E
RGB	rgb(40, 37, 126)
HSL	hsl(242, 55%, 32%)
HSV	hsv(242, 71%, 49%)
CMYK	cmyk(68.3%, 70.6%, 0%, 50.6%)
CIE-LAB	lab(21.13, 30.98, -49.83)
CIE-LCH	lch(21.13, 58.68, 301.87°)
OKLab	oklab(33.31% 0.0166 -0.1438)
OKLCH	oklch(33.31% 0.145 276.6)
XYZ	xyz(5.3013, 3.2802, 20.0884)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28257E #7B7E25

analogous

#254F7E #28257E #54257E

triadic

#28257E #7E2825 #257E28

tetradic

#28257E #7E254F #7B7E25 #257E54

square

#28257E #7E254F #7B7E25 #257E54

split-complementary

#28257E #7E5425 #4F7E25

monochromatic

#0A091F #19174F #28257E #3733AD #5651CC

Accessibility & contrast

On white

12.68

#28257E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#28257E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28257E

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28257E	#FFFFFF	#000000	##FFFFFF
##28257E	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003781

Deuteranopia (green-blind)

#002F7C

Tritanopia (blue-blind)

#003D4E

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #28257e;
/* rgb */ color: rgb(40, 37, 126);
/* oklch */ color: oklch(33.3% 0.145 276.6);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#28257e",
  "rgb": {
    "r": 40,
    "g": 37,
    "b": 126
  },
  "hsl": {
    "h": 242.022,
    "s": 54.601,
    "l": 31.961
  },
  "oklch": {
    "l": 0.33312,
    "c": 0.1448,
    "h": 276.6
  },
  "luminance": 0.03281
}

Semantic roles & 50–950 ramp

primary

#28257E

secondary

#ADB04F

accent

#DE4AD9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08050F

muted

#7B797F

Preview Lab

Preview with #28257E

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

Preview Lab → · Contrast checker → · Palette generator →