#282BB4#282BB4

#282BB4 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 39.9% C 0.207 H 271.2°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#282BB4
RGB	rgb(40, 43, 180)
HSL	hsl(239, 64%, 43%)
HSV	hsv(239, 78%, 71%)
CMYK	cmyk(77.8%, 76.1%, 0%, 29.4%)
CIE-LAB	lab(28.04, 46.00, -71.59)
CIE-LCH	lch(28.04, 85.10, 302.72°)
OKLab	oklab(39.92% 0.0042 -0.2073)
OKLCH	oklch(39.92% 0.207 271.2)
XYZ	xyz(9.9744, 5.4731, 43.7019)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#282BB4 #B4B128

analogous

#2871B4 #282BB4 #6B28B4

triadic

#282BB4 #B4282B #2BB428

tetradic

#282BB4 #B42871 #B4B128 #28B46B

square

#282BB4 #B42871 #B4B128 #28B46B

split-complementary

#282BB4 #B46B28 #71B428

monochromatic

#121350 #1D1F82 #282BB4 #4447D5 #7678E1

Accessibility & contrast

On white

10.02

#282BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#282BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #282BB4

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##282BB4	#FFFFFF	#000000	##FFFFFF
##282BB4	1.00	10.02	2.09	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B8

Deuteranopia (green-blind)

#003BB2

Tritanopia (blue-blind)

#00546E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #282bb4;
/* rgb */ color: rgb(40, 43, 180);
/* oklch */ color: oklch(39.9% 0.207 271.2);

Tailwind

colors: {
  custom: {
    50: '#7b66cc',
    500: '#282bb4',
    950: '#000000',
  },
}

SCSS

$custom: #282bb4;
$custom-light: #7b66cc;
$custom-dark: #000000;

JSON

{
  "hex": "#282bb4",
  "rgb": {
    "r": 40,
    "g": 43,
    "b": 180
  },
  "hsl": {
    "h": 238.714,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.39925,
    "c": 0.20734,
    "h": 271.2
  },
  "luminance": 0.05474
}

Semantic roles & 50–950 ramp

primary

#282BB4

secondary

#C8C670

accent

#E341E7

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #282BB4

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

Preview Lab → · Contrast checker → · Palette generator →