#2841B3#2841B3

#2841B3 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.4% C 0.182 H 268.0°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#2841B3
RGB	rgb(40, 65, 179)
HSL	hsl(229, 63%, 43%)
HSV	hsv(229, 78%, 70%)
CMYK	cmyk(77.7%, 63.7%, 0%, 29.8%)
CIE-LAB	lab(32.89, 32.20, -63.02)
CIE-LCH	lch(32.89, 70.77, 297.06°)
OKLab	oklab(43.4% -0.0064 -0.1823)
OKLCH	oklch(43.4% 0.182 268)
XYZ	xyz(10.8992, 7.4852, 43.5094)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2841B3 #B39A28

analogous

#2886B3 #2841B3 #5528B3

triadic

#2841B3 #B32841 #41B328

tetradic

#2841B3 #B32886 #B39A28 #28B355

square

#2841B3 #B32886 #B39A28 #28B355

split-complementary

#2841B3 #B35528 #86B328

monochromatic

#121D4F #1D2F81 #2841B3 #435DD5 #7588E0

Accessibility & contrast

On white

8.41

#2841B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#2841B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2841B3

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2841B3	#FFFFFF	#000000	##FFFFFF
##2841B3	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B7

Deuteranopia (green-blind)

#0047B1

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2841b3;
/* rgb */ color: rgb(40, 65, 179);
/* oklch */ color: oklch(43.4% 0.182 268.0);

Tailwind

colors: {
  custom: {
    50: '#7875cb',
    500: '#2841b3',
    950: '#000000',
  },
}

SCSS

$custom: #2841b3;
$custom-light: #7875cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2841b3",
  "rgb": {
    "r": 40,
    "g": 65,
    "b": 179
  },
  "hsl": {
    "h": 229.209,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.43398,
    "c": 0.18241,
    "h": 268
  },
  "luminance": 0.07486
}

Semantic roles & 50–950 ramp

primary

#2841B3

secondary

#C8B86F

accent

#C941E6

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2841B3

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

Preview Lab → · Contrast checker → · Palette generator →