#283C7D#283C7D

#283C7D is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.8% C 0.113 H 267.8°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#283C7D
RGB	rgb(40, 60, 125)
HSL	hsl(226, 52%, 32%)
HSV	hsv(226, 68%, 49%)
CMYK	cmyk(68%, 52%, 0%, 51%)
CIE-LAB	lab(27.19, 15.00, -39.35)
CIE-LCH	lch(27.19, 42.11, 290.87°)
OKLab	oklab(37.78% -0.0043 -0.1128)
OKLCH	oklch(37.78% 0.113 267.8)
XYZ	xyz(6.1913, 5.1629, 20.0683)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C7D #7D6928

analogous

#28677D #283C7D #3E287D

triadic

#283C7D #7D283C #3C7D28

tetradic

#283C7D #7D2867 #7D6928 #287D3E

square

#283C7D #7D2867 #7D6928 #287D3E

split-complementary

#283C7D #7D3E28 #677D28

monochromatic

#0A0F20 #19264F #283C7D #3752AB #5671C9

Accessibility & contrast

On white

10.33

#283C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#283C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C7D

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C7D	#FFFFFF	#000000	##FFFFFF
##283C7D	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17447F

Deuteranopia (green-blind)

#003D7C

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283c7d;
/* rgb */ color: rgb(40, 60, 125);
/* oklch */ color: oklch(37.8% 0.113 267.8);

Tailwind

colors: {
  custom: {
    50: '#6c71a3',
    500: '#283c7d',
    950: '#000000',
  },
}

SCSS

$custom: #283c7d;
$custom-light: #6c71a3;
$custom-dark: #000000;

JSON

{
  "hex": "#283c7d",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 125
  },
  "hsl": {
    "h": 225.882,
    "s": 51.515,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37782,
    "c": 0.11289,
    "h": 267.8
  },
  "luminance": 0.05164
}

Semantic roles & 50–950 ramp

primary

#283C7D

secondary

#AE9953

accent

#BA4DDB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #283C7D

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

Preview Lab → · Contrast checker → · Palette generator →