#2840A7#2840A7

#2840A7 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.1% C 0.168 H 268.1°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#2840A7
RGB	rgb(40, 64, 167)
HSL	hsl(229, 61%, 41%)
HSV	hsv(229, 76%, 65%)
CMYK	cmyk(76%, 61.7%, 0%, 34.5%)
CIE-LAB	lab(31.59, 28.36, -57.98)
CIE-LCH	lch(31.59, 64.54, 296.07°)
OKLab	oklab(42.12% -0.0055 -0.1675)
OKLCH	oklch(42.12% 0.168 268.1)
XYZ	xyz(9.6811, 6.9069, 37.3747)
Luminance	0.0691 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2840A7 #A78F28

analogous

#2880A7 #2840A7 #4F28A7

triadic

#2840A7 #A72840 #40A728

tetradic

#2840A7 #A72880 #A78F28 #28A74F

square

#2840A7 #A72880 #A78F28 #28A74F

split-complementary

#2840A7 #A74F28 #80A728

monochromatic

#101A44 #1C2D76 #2840A7 #3C58D0 #6D82DC

Accessibility & contrast

On white

8.82

#2840A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#2840A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2840A7

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2840A7	#FFFFFF	#000000	##FFFFFF
##2840A7	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0045A5

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2840a7;
/* rgb */ color: rgb(40, 64, 167);
/* oklch */ color: oklch(42.1% 0.168 268.1);

Tailwind

colors: {
  custom: {
    50: '#7674c2',
    500: '#2840a7',
    950: '#000000',
  },
}

SCSS

$custom: #2840a7;
$custom-light: #7674c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2840a7",
  "rgb": {
    "r": 40,
    "g": 64,
    "b": 167
  },
  "hsl": {
    "h": 228.661,
    "s": 61.353,
    "l": 40.588
  },
  "oklch": {
    "l": 0.42121,
    "c": 0.16761,
    "h": 268.1
  },
  "luminance": 0.06908
}

Semantic roles & 50–950 ramp

primary

#2840A7

secondary

#C3B268

accent

#C643E4

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2840A7

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

Preview Lab → · Contrast checker → · Palette generator →