#283C75#283C75

#283C75 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.2% C 0.101 H 266.9°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#283C75
RGB	rgb(40, 60, 117)
HSL	hsl(224, 49%, 31%)
HSV	hsv(224, 66%, 46%)
CMYK	cmyk(65.8%, 48.7%, 0%, 54.1%)
CIE-LAB	lab(26.64, 11.93, -35.19)
CIE-LCH	lch(26.64, 37.16, 288.72°)
OKLab	oklab(37.18% -0.0054 -0.1006)
OKLCH	oklch(37.18% 0.101 266.9)
XYZ	xyz(5.7007, 4.9667, 17.4844)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C75 #756128

analogous

#286275 #283C75 #3A2875

triadic

#283C75 #75283C #3C7528

tetradic

#283C75 #752862 #756128 #28753A

square

#283C75 #752862 #756128 #28753A

split-complementary

#283C75 #753A28 #627528

monochromatic

#090D1A #182547 #283C75 #3853A3 #5371C4

Accessibility & contrast

On white

10.53

#283C75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#283C75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C75

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C75	#FFFFFF	#000000	##FFFFFF
##283C75	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204377

Deuteranopia (green-blind)

#123C74

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #283c75;
/* rgb */ color: rgb(40, 60, 117);
/* oklch */ color: oklch(37.2% 0.101 266.9);

Tailwind

colors: {
  custom: {
    50: '#6a719d',
    500: '#283c75',
    950: '#000000',
  },
}

SCSS

$custom: #283c75;
$custom-light: #6a719d;
$custom-dark: #000000;

JSON

{
  "hex": "#283c75",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 117
  },
  "hsl": {
    "h": 224.416,
    "s": 49.045,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37182,
    "c": 0.10073,
    "h": 266.9
  },
  "luminance": 0.04967
}

Semantic roles & 50–950 ramp

primary

#283C75

secondary

#A79152

accent

#B54FD9

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283C75

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

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