#283C7C#283C7C

#283C7C is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.7% C 0.111 H 267.7°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#283C7C
RGB	rgb(40, 60, 124)
HSL	hsl(226, 51%, 32%)
HSV	hsv(226, 68%, 49%)
CMYK	cmyk(67.7%, 51.6%, 0%, 51.4%)
CIE-LAB	lab(27.12, 14.61, -38.83)
CIE-LCH	lch(27.12, 41.49, 290.62°)
OKLab	oklab(37.71% -0.0044 -0.1113)
OKLCH	oklch(37.71% 0.111 267.7)
XYZ	xyz(6.1278, 5.1375, 19.7336)
Luminance	0.0514 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C7C #7C6828

analogous

#28667C #283C7C #3E287C

triadic

#283C7C #7C283C #3C7C28

tetradic

#283C7C #7C2866 #7C6828 #287C3E

square

#283C7C #7C2866 #7C6828 #287C3E

split-complementary

#283C7C #7C3E28 #667C28

monochromatic

#0A0F1F #19264E #283C7C #3752AA #5671C8

Accessibility & contrast

On white

10.36

#283C7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#283C7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C7C

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C7C	#FFFFFF	#000000	##FFFFFF
##283C7C	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19447E

Deuteranopia (green-blind)

#023C7B

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283c7c;
/* rgb */ color: rgb(40, 60, 124);
/* oklch */ color: oklch(37.7% 0.111 267.7);

Tailwind

colors: {
  custom: {
    50: '#6c71a2',
    500: '#283c7c',
    950: '#000000',
  },
}

SCSS

$custom: #283c7c;
$custom-light: #6c71a2;
$custom-dark: #000000;

JSON

{
  "hex": "#283c7c",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 124
  },
  "hsl": {
    "h": 225.714,
    "s": 51.22,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37706,
    "c": 0.11139,
    "h": 267.7
  },
  "luminance": 0.05138
}

Semantic roles & 50–950 ramp

primary

#283C7C

secondary

#AD9852

accent

#B94DDB

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #283C7C

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

Preview Lab → · Contrast checker → · Palette generator →