#28318F#28318F

#28318F is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.1% C 0.153 H 272.2°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#28318F
RGB	rgb(40, 49, 143)
HSL	hsl(235, 56%, 36%)
HSV	hsv(235, 72%, 56%)
CMYK	cmyk(72%, 65.7%, 0%, 43.9%)
CIE-LAB	lab(25.65, 29.33, -53.07)
CIE-LCH	lch(25.65, 60.64, 298.93°)
OKLab	oklab(37.09% 0.0058 -0.1533)
OKLCH	oklch(37.09% 0.153 272.2)
XYZ	xyz(6.9296, 4.6302, 26.5098)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28318F #8F8628

analogous

#28648F #28318F #52288F

triadic

#28318F #8F2831 #318F28

tetradic

#28318F #8F2864 #8F8628 #288F52

square

#28318F #8F2864 #8F8628 #288F52

split-complementary

#28318F #8F5228 #648F28

monochromatic

#0D102F #1B215F #28318F #3541BF #5F69D2

Accessibility & contrast

On white

10.90

#28318F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#28318F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28318F

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28318F	#FFFFFF	#000000	##FFFFFF
##28318F	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004292

Deuteranopia (green-blind)

#00388D

Tritanopia (blue-blind)

#00495B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #28318f;
/* rgb */ color: rgb(40, 49, 143);
/* oklch */ color: oklch(37.1% 0.153 272.2);

Tailwind

colors: {
  custom: {
    50: '#7169b1',
    500: '#28318f',
    950: '#000000',
  },
}

SCSS

$custom: #28318f;
$custom-light: #7169b1;
$custom-dark: #000000;

JSON

{
  "hex": "#28318f",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 143
  },
  "hsl": {
    "h": 234.757,
    "s": 56.284,
    "l": 35.882
  },
  "oklch": {
    "l": 0.3709,
    "c": 0.15338,
    "h": 272.2
  },
  "luminance": 0.04631
}

Semantic roles & 50–950 ramp

primary

#28318F

secondary

#B8B05B

accent

#D248E0

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #28318F

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

Preview Lab → · Contrast checker → · Palette generator →