#28313F#28313F

#28313F is a dark, muted blue. Relative luminance 0.030; OKLCH L 31.1% C 0.028 H 259.1°. Best body text is #FFFFFF at 13.11:1 contrast (WCAG AA passes).

Color values

HEX	#28313F
RGB	rgb(40, 49, 63)
HSL	hsl(217, 22%, 20%)
HSV	hsv(217, 37%, 25%)
CMYK	cmyk(36.5%, 22.2%, 0%, 75.3%)
CIE-LAB	lab(20.07, 0.23, -10.05)
CIE-LCH	lch(20.07, 10.05, 271.31°)
OKLab	oklab(31.09% -0.0053 -0.0277)
OKLCH	oklch(31.09% 0.028 259.1)
XYZ	xyz(2.8703, 3.0065, 5.1307)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28313F #3F3628

analogous

#283C3F #28313F #2A283F

triadic

#28313F #3F2831 #313F28

tetradic

#28313F #3F283C #3F3628 #283F2A

square

#28313F #3F283C #3F3628 #283F2A

split-complementary

#28313F #3F2A28 #3C3F28

monochromatic

#0C0F13 #10141A #28313F #404E64 #586B8A

Accessibility & contrast

On white

13.11

#28313F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#28313F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28313F

13.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28313F	#FFFFFF	#000000	##FFFFFF
##28313F	1.00	13.11	1.60	13.11
#FFFFFF	13.11	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3240

Deuteranopia (green-blind)

#2A2F3F

Tritanopia (blue-blind)

#213436

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #28313f;
/* rgb */ color: rgb(40, 49, 63);
/* oklch */ color: oklch(31.1% 0.028 259.1);

Tailwind

colors: {
  custom: {
    50: '#626974',
    500: '#28313f',
    950: '#000000',
  },
}

SCSS

$custom: #28313f;
$custom-light: #626974;
$custom-dark: #000000;

JSON

{
  "hex": "#28313f",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 63
  },
  "hsl": {
    "h": 216.522,
    "s": 22.33,
    "l": 20.196
  },
  "oklch": {
    "l": 0.31093,
    "c": 0.02819,
    "h": 259.1
  },
  "luminance": 0.03007
}

Semantic roles & 50–950 ramp

primary

#28313F

secondary

#716552

accent

#9D69BF

background

#F5F6F7

surface

#EAEBED

border

#C6C6C8

text

#050608

muted

#797A7B

Preview Lab

Preview with #28313F

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

Preview Lab → · Contrast checker → · Palette generator →