#2840A3#2840A3

#2840A3 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.8% C 0.162 H 268.0°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#2840A3
RGB	rgb(40, 64, 163)
HSL	hsl(228, 61%, 40%)
HSV	hsv(228, 75%, 64%)
CMYK	cmyk(75.5%, 60.7%, 0%, 36.1%)
CIE-LAB	lab(31.26, 26.85, -56.12)
CIE-LCH	lch(31.26, 62.21, 295.57°)
OKLab	oklab(41.77% -0.0055 -0.1621)
OKLCH	oklch(41.77% 0.162 268)
XYZ	xyz(9.3170, 6.7612, 35.4572)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2840A3 #A38B28

analogous

#287DA3 #2840A3 #4E28A3

triadic

#2840A3 #A32840 #40A328

tetradic

#2840A3 #A3287D #A38B28 #28A34E

square

#2840A3 #A3287D #A38B28 #28A34E

split-complementary

#2840A3 #A34E28 #7DA328

monochromatic

#101941 #1C2D72 #2840A3 #3A57CF #6B81DB

Accessibility & contrast

On white

8.93

#2840A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#2840A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2840A3

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2840A3	#FFFFFF	#000000	##FFFFFF
##2840A3	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA6

Deuteranopia (green-blind)

#0044A1

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2840a3;
/* rgb */ color: rgb(40, 64, 163);
/* oklch */ color: oklch(41.8% 0.162 268.0);

Tailwind

colors: {
  custom: {
    50: '#7574bf',
    500: '#2840a3',
    950: '#000000',
  },
}

SCSS

$custom: #2840a3;
$custom-light: #7574bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2840a3",
  "rgb": {
    "r": 40,
    "g": 64,
    "b": 163
  },
  "hsl": {
    "h": 228.293,
    "s": 60.591,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41766,
    "c": 0.16216,
    "h": 268
  },
  "luminance": 0.06762
}

Semantic roles & 50–950 ramp

primary

#2840A3

secondary

#C1AF66

accent

#C544E4

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2840A3

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

Preview Lab → · Contrast checker → · Palette generator →