#283C64#283C64

#283C64 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.0% C 0.074 H 263.1°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX	#283C64
RGB	rgb(40, 60, 100)
HSL	hsl(220, 43%, 27%)
HSV	hsv(220, 60%, 39%)
CMYK	cmyk(60%, 40%, 0%, 60.8%)
CIE-LAB	lab(25.57, 5.51, -26.02)
CIE-LCH	lch(25.57, 26.59, 281.95°)
OKLab	oklab(36.01% -0.009 -0.0737)
OKLCH	oklch(36.01% 0.074 263.1)
XYZ	xyz(4.7904, 4.6026, 12.6901)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C64 #645028

analogous

#285A64 #283C64 #322864

triadic

#283C64 #64283C #3C6428

tetradic

#283C64 #64285A #645028 #286432

square

#283C64 #64285A #645028 #286432

split-complementary

#283C64 #643228 #5A6428

monochromatic

#090D16 #172238 #283C64 #395690 #4E72B8

Accessibility & contrast

On white

10.93

#283C64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#283C64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C64

10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C64	#FFFFFF	#000000	##FFFFFF
##283C64	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4066

Deuteranopia (green-blind)

#243A63

Tritanopia (blue-blind)

#01454B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283c64;
/* rgb */ color: rgb(40, 60, 100);
/* oklch */ color: oklch(36.0% 0.074 263.1);

Tailwind

colors: {
  custom: {
    50: '#677190',
    500: '#283c64',
    950: '#000000',
  },
}

SCSS

$custom: #283c64;
$custom-light: #677190;
$custom-dark: #000000;

JSON

{
  "hex": "#283c64",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 100
  },
  "hsl": {
    "h": 220,
    "s": 42.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.36013,
    "c": 0.07423,
    "h": 263.1
  },
  "luminance": 0.04603
}

Semantic roles & 50–950 ramp

primary

#283C64

secondary

#977F51

accent

#A955D3

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #283C64

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

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