#283CA7#283CA7

#283CA7 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.4% C 0.172 H 269.0°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#283CA7
RGB	rgb(40, 60, 167)
HSL	hsl(231, 61%, 41%)
HSV	hsv(231, 76%, 65%)
CMYK	cmyk(76%, 64.1%, 0%, 34.5%)
CIE-LAB	lab(30.57, 31.00, -59.65)
CIE-LCH	lch(30.57, 67.22, 297.46°)
OKLab	oklab(41.37% -0.0029 -0.1725)
OKLCH	oklch(41.37% 0.172 269)
XYZ	xyz(9.4636, 6.4718, 37.3022)
Luminance	0.0647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283CA7 #A79328

analogous

#287BA7 #283CA7 #5328A7

triadic

#283CA7 #A7283C #3CA728

tetradic

#283CA7 #A7287B #A79328 #28A753

square

#283CA7 #A7287B #A79328 #28A753

split-complementary

#283CA7 #A75328 #7BA728

monochromatic

#101944 #1C2A76 #283CA7 #3C53D0 #6D7FDC

Accessibility & contrast

On white

9.15

#283CA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#283CA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283CA7

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283CA7	#FFFFFF	#000000	##FFFFFF
##283CA7	1.00	9.15	2.29	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAA

Deuteranopia (green-blind)

#0042A5

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #283ca7;
/* rgb */ color: rgb(40, 60, 167);
/* oklch */ color: oklch(41.4% 0.172 269.0);

Tailwind

colors: {
  custom: {
    50: '#7671c2',
    500: '#283ca7',
    950: '#000000',
  },
}

SCSS

$custom: #283ca7;
$custom-light: #7671c2;
$custom-dark: #000000;

JSON

{
  "hex": "#283ca7",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 167
  },
  "hsl": {
    "h": 230.551,
    "s": 61.353,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41366,
    "c": 0.17248,
    "h": 269
  },
  "luminance": 0.06473
}

Semantic roles & 50–950 ramp

primary

#283CA7

secondary

#C3B468

accent

#CB43E4

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #283CA7

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

Preview Lab → · Contrast checker → · Palette generator →