#2840A9#2840A9

#2840A9 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.3% C 0.170 H 268.1°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#2840A9
RGB	rgb(40, 64, 169)
HSL	hsl(229, 62%, 41%)
HSV	hsv(229, 76%, 66%)
CMYK	cmyk(76.3%, 62.1%, 0%, 33.7%)
CIE-LAB	lab(31.76, 29.11, -58.90)
CIE-LCH	lch(31.76, 65.70, 296.30°)
OKLab	oklab(42.3% -0.0055 -0.1702)
OKLCH	oklch(42.3% 0.17 268.1)
XYZ	xyz(9.8674, 6.9814, 38.3559)
Luminance	0.0698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2840A9 #A99128

analogous

#2880A9 #2840A9 #5028A9

triadic

#2840A9 #A92840 #40A928

tetradic

#2840A9 #A92880 #A99128 #28A950

square

#2840A9 #A92880 #A99128 #28A950

split-complementary

#2840A9 #A95028 #80A928

monochromatic

#111B46 #1C2D78 #2840A9 #3D59D1 #6F83DD

Accessibility & contrast

On white

8.76

#2840A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#2840A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2840A9

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2840A9	#FFFFFF	#000000	##FFFFFF
##2840A9	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AC

Deuteranopia (green-blind)

#0045A7

Tritanopia (blue-blind)

#005B6E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2840a9;
/* rgb */ color: rgb(40, 64, 169);
/* oklch */ color: oklch(42.3% 0.170 268.1);

Tailwind

colors: {
  custom: {
    50: '#7674c3',
    500: '#2840a9',
    950: '#000000',
  },
}

SCSS

$custom: #2840a9;
$custom-light: #7674c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2840a9",
  "rgb": {
    "r": 40,
    "g": 64,
    "b": 169
  },
  "hsl": {
    "h": 228.837,
    "s": 61.722,
    "l": 40.98
  },
  "oklch": {
    "l": 0.423,
    "c": 0.17031,
    "h": 268.1
  },
  "luminance": 0.06982
}

Semantic roles & 50–950 ramp

primary

#2840A9

secondary

#C4B369

accent

#C743E5

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2840A9

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

Preview Lab → · Contrast checker → · Palette generator →