#2840A6#2840A6

#2840A6 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.0% C 0.166 H 268.1°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#2840A6
RGB	rgb(40, 64, 166)
HSL	hsl(229, 61%, 40%)
HSV	hsv(229, 76%, 65%)
CMYK	cmyk(75.9%, 61.4%, 0%, 34.9%)
CIE-LAB	lab(31.51, 27.98, -57.51)
CIE-LCH	lch(31.51, 63.96, 295.94°)
OKLab	oklab(42.03% -0.0055 -0.1662)
OKLCH	oklch(42.03% 0.166 268.1)
XYZ	xyz(9.5890, 6.8700, 36.8897)
Luminance	0.0687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2840A6 #A68E28

analogous

#287FA6 #2840A6 #4F28A6

triadic

#2840A6 #A62840 #40A628

tetradic

#2840A6 #A6287F #A68E28 #28A64F

square

#2840A6 #A6287F #A68E28 #28A64F

split-complementary

#2840A6 #A64F28 #7FA628

monochromatic

#101A43 #1C2D75 #2840A6 #3B58D0 #6D82DC

Accessibility & contrast

On white

8.85

#2840A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#2840A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2840A6

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2840A6	#FFFFFF	#000000	##FFFFFF
##2840A6	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A9

Deuteranopia (green-blind)

#0044A4

Tritanopia (blue-blind)

#005A6C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2840a6;
/* rgb */ color: rgb(40, 64, 166);
/* oklch */ color: oklch(42.0% 0.166 268.1);

Tailwind

colors: {
  custom: {
    50: '#7574c1',
    500: '#2840a6',
    950: '#000000',
  },
}

SCSS

$custom: #2840a6;
$custom-light: #7574c1;
$custom-dark: #000000;

JSON

{
  "hex": "#2840a6",
  "rgb": {
    "r": 40,
    "g": 64,
    "b": 166
  },
  "hsl": {
    "h": 228.571,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.42032,
    "c": 0.16625,
    "h": 268.1
  },
  "luminance": 0.06871
}

Semantic roles & 50–950 ramp

primary

#2840A6

secondary

#C2B167

accent

#C644E4

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2840A6

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

Preview Lab → · Contrast checker → · Palette generator →