#28307E#28307E

#28307E is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.3% C 0.131 H 273.2°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#28307E
RGB	rgb(40, 48, 126)
HSL	hsl(234, 52%, 33%)
HSV	hsv(234, 68%, 49%)
CMYK	cmyk(68.3%, 61.9%, 0%, 50.6%)
CIE-LAB	lab(23.90, 23.67, -45.30)
CIE-LCH	lch(23.90, 51.12, 297.59°)
OKLab	oklab(35.34% 0.0074 -0.1305)
OKLCH	oklch(35.34% 0.131 273.2)
XYZ	xyz(5.6967, 4.0709, 20.2202)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28307E #7E7628

analogous

#285B7E #28307E #4B287E

triadic

#28307E #7E2830 #307E28

tetradic

#28307E #7E285B #7E7628 #287E4B

square

#28307E #7E285B #7E7628 #287E4B

split-complementary

#28307E #7E4B28 #5B7E28

monochromatic

#0B0D21 #191E50 #28307E #3742AC #5761CA

Accessibility & contrast

On white

11.58

#28307E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#28307E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28307E

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28307E	#FFFFFF	#000000	##FFFFFF
##28307E	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D81

Deuteranopia (green-blind)

#00357C

Tritanopia (blue-blind)

#004352

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #28307e;
/* rgb */ color: rgb(40, 48, 126);
/* oklch */ color: oklch(35.3% 0.131 273.2);

Tailwind

colors: {
  custom: {
    50: '#6d68a4',
    500: '#28307e',
    950: '#000000',
  },
}

SCSS

$custom: #28307e;
$custom-light: #6d68a4;
$custom-dark: #000000;

JSON

{
  "hex": "#28307e",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 126
  },
  "hsl": {
    "h": 234.419,
    "s": 51.807,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35338,
    "c": 0.13071,
    "h": 273.2
  },
  "luminance": 0.04071
}

Semantic roles & 50–950 ramp

primary

#28307E

secondary

#AFA653

accent

#CE4DDB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #28307E

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

Preview Lab → · Contrast checker → · Palette generator →