#283A6C#283A6C

#283A6C is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.1% C 0.090 H 267.0°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#283A6C
RGB	rgb(40, 58, 108)
HSL	hsl(224, 46%, 29%)
HSV	hsv(224, 63%, 42%)
CMYK	cmyk(63%, 46.3%, 0%, 57.6%)
CIE-LAB	lab(25.44, 9.89, -31.37)
CIE-LCH	lch(25.44, 32.90, 287.49°)
OKLab	oklab(36.07% -0.0047 -0.0894)
OKLCH	oklch(36.07% 0.09 267)
XYZ	xyz(5.0940, 4.5595, 14.7961)
Luminance	0.0456 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A6C #6C5A28

analogous

#285C6C #283A6C #38286C

triadic

#283A6C #6C283A #3A6C28

tetradic

#283A6C #6C285C #6C5A28 #286C38

square

#283A6C #6C285C #6C5A28 #286C38

split-complementary

#283A6C #6C3828 #5C6C28

monochromatic

#080C16 #17223F #283A6C #395299 #506DBE

Accessibility & contrast

On white

10.98

#283A6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#283A6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A6C

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A6C	#FFFFFF	#000000	##FFFFFF
##283A6C	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23406E

Deuteranopia (green-blind)

#1A396B

Tritanopia (blue-blind)

#00454D

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283a6c;
/* rgb */ color: rgb(40, 58, 108);
/* oklch */ color: oklch(36.1% 0.090 267.0);

Tailwind

colors: {
  custom: {
    50: '#696f96',
    500: '#283a6c',
    950: '#000000',
  },
}

SCSS

$custom: #283a6c;
$custom-light: #696f96;
$custom-dark: #000000;

JSON

{
  "hex": "#283a6c",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 108
  },
  "hsl": {
    "h": 224.118,
    "s": 45.946,
    "l": 29.02
  },
  "oklch": {
    "l": 0.36073,
    "c": 0.08952,
    "h": 267
  },
  "luminance": 0.0456
}

Semantic roles & 50–950 ramp

primary

#283A6C

secondary

#9E8A51

accent

#B352D6

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070D

muted

#7A7A7E

Preview Lab

Preview with #283A6C

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

Preview Lab → · Contrast checker → · Palette generator →