#283F68#283F68

#283F68 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.0% C 0.077 H 261.2°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#283F68
RGB	rgb(40, 63, 104)
HSL	hsl(218, 44%, 28%)
HSV	hsv(218, 62%, 41%)
CMYK	cmyk(61.5%, 39.4%, 0%, 59.2%)
CIE-LAB	lab(26.75, 4.94, -26.73)
CIE-LCH	lch(26.75, 27.18, 280.47°)
OKLab	oklab(37% -0.0117 -0.0757)
OKLCH	oklch(37% 0.077 261.2)
XYZ	xyz(5.1504, 5.0052, 13.7887)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F68 #685128

analogous

#285F68 #283F68 #312868

triadic

#283F68 #68283F #3F6828

tetradic

#283F68 #68285F #685128 #286831

square

#283F68 #68285F #685128 #286831

split-complementary

#283F68 #683128 #5F6828

monochromatic

#090D16 #17243C #283F68 #395A94 #4F76BB

Accessibility & contrast

On white

10.49

#283F68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#283F68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F68

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F68	#FFFFFF	#000000	##FFFFFF
##283F68	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E426A

Deuteranopia (green-blind)

#263D67

Tritanopia (blue-blind)

#00484E

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #283f68;
/* rgb */ color: rgb(40, 63, 104);
/* oklch */ color: oklch(37.0% 0.077 261.2);

Tailwind

colors: {
  custom: {
    50: '#687393',
    500: '#283f68',
    950: '#000000',
  },
}

SCSS

$custom: #283f68;
$custom-light: #687393;
$custom-dark: #000000;

JSON

{
  "hex": "#283f68",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 104
  },
  "hsl": {
    "h": 218.438,
    "s": 44.444,
    "l": 28.235
  },
  "oklch": {
    "l": 0.37003,
    "c": 0.07664,
    "h": 261.2
  },
  "luminance": 0.05006
}

Semantic roles & 50–950 ramp

primary

#283F68

secondary

#9B8051

accent

#A654D4

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #283F68

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

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