#283C70#283C70

#283C70 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.8% C 0.093 H 266.1°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#283C70
RGB	rgb(40, 60, 112)
HSL	hsl(223, 47%, 30%)
HSV	hsv(223, 64%, 44%)
CMYK	cmyk(64.3%, 46.4%, 0%, 56.1%)
CIE-LAB	lab(26.31, 10.02, -32.54)
CIE-LCH	lch(26.31, 34.05, 287.11°)
OKLab	oklab(36.82% -0.0063 -0.0928)
OKLCH	oklch(36.82% 0.093 266.1)
XYZ	xyz(5.4146, 4.8522, 15.9773)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C70 #705C28

analogous

#286070 #283C70 #382870

triadic

#283C70 #70283C #3C7028

tetradic

#283C70 #702860 #705C28 #287038

square

#283C70 #702860 #705C28 #287038

split-complementary

#283C70 #703828 #607028

monochromatic

#080C17 #182443 #283C70 #38549D #5170C1

Accessibility & contrast

On white

10.66

#283C70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#283C70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C70

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C70	#FFFFFF	#000000	##FFFFFF
##283C70	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244272

Deuteranopia (green-blind)

#193B6F

Tritanopia (blue-blind)

#004850

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283c70;
/* rgb */ color: rgb(40, 60, 112);
/* oklch */ color: oklch(36.8% 0.093 266.1);

Tailwind

colors: {
  custom: {
    50: '#697199',
    500: '#283c70',
    950: '#000000',
  },
}

SCSS

$custom: #283c70;
$custom-light: #697199;
$custom-dark: #000000;

JSON

{
  "hex": "#283c70",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 112
  },
  "hsl": {
    "h": 223.333,
    "s": 47.368,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36823,
    "c": 0.09302,
    "h": 266.1
  },
  "luminance": 0.04853
}

Semantic roles & 50–950 ramp

primary

#283C70

secondary

#A28C51

accent

#B251D7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283C70

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

Preview Lab → · Contrast checker → · Palette generator →