#28357C#28357C

#28357C is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.2% C 0.121 H 271.2°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#28357C
RGB	rgb(40, 53, 124)
HSL	hsl(231, 51%, 32%)
HSV	hsv(231, 68%, 49%)
CMYK	cmyk(67.7%, 57.3%, 0%, 51.4%)
CIE-LAB	lab(25.11, 19.47, -42.08)
CIE-LCH	lch(25.11, 46.37, 294.83°)
OKLab	oklab(36.19% 0.0026 -0.121)
OKLCH	oklch(36.19% 0.121 271.2)
XYZ	xyz(5.7850, 4.4520, 19.6193)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28357C #7C6F28

analogous

#285F7C #28357C #45287C

triadic

#28357C #7C2835 #357C28

tetradic

#28357C #7C285F #7C6F28 #287C45

square

#28357C #7C285F #7C6F28 #287C45

split-complementary

#28357C #7C4528 #5F7C28

monochromatic

#0A0D1F #19214E #28357C #3749AA #5668C8

Accessibility & contrast

On white

11.11

#28357C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#28357C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28357C

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28357C	#FFFFFF	#000000	##FFFFFF
##28357C	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F7E

Deuteranopia (green-blind)

#00387B

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #28357c;
/* rgb */ color: rgb(40, 53, 124);
/* oklch */ color: oklch(36.2% 0.121 271.2);

Tailwind

colors: {
  custom: {
    50: '#6c6ca2',
    500: '#28357c',
    950: '#000000',
  },
}

SCSS

$custom: #28357c;
$custom-light: #6c6ca2;
$custom-dark: #000000;

JSON

{
  "hex": "#28357c",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 124
  },
  "hsl": {
    "h": 230.714,
    "s": 51.22,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36188,
    "c": 0.12099,
    "h": 271.2
  },
  "luminance": 0.04453
}

Semantic roles & 50–950 ramp

primary

#28357C

secondary

#AD9F52

accent

#C54DDB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #28357C

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

Preview Lab → · Contrast checker → · Palette generator →