#2827B3#2827B3

#2827B3 is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 39.3% C 0.210 H 271.6°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#2827B3
RGB	rgb(40, 39, 179)
HSL	hsl(240, 64%, 43%)
HSV	hsv(240, 78%, 70%)
CMYK	cmyk(77.7%, 78.2%, 0%, 29.8%)
CIE-LAB	lab(27.17, 47.84, -72.43)
CIE-LCH	lch(27.17, 86.81, 303.44°)
OKLab	oklab(39.28% 0.0058 -0.2097)
OKLCH	oklch(39.28% 0.21 271.6)
XYZ	xyz(9.7345, 5.1558, 43.1212)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2827B3 #B2B327

analogous

#276CB3 #2827B3 #6E27B3

triadic

#2827B3 #B32827 #27B328

tetradic

#2827B3 #B3276C #B2B327 #27B36E

square

#2827B3 #B3276C #B2B327 #27B36E

split-complementary

#2827B3 #B36E27 #6CB327

monochromatic

#12114E #1D1C81 #2827B3 #4341D6 #7574E1

Accessibility & contrast

On white

10.34

#2827B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#2827B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2827B3

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2827B3	#FFFFFF	#000000	##FFFFFF
##2827B3	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B7

Deuteranopia (green-blind)

#0039B1

Tritanopia (blue-blind)

#00526C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2827b3;
/* rgb */ color: rgb(40, 39, 179);
/* oklch */ color: oklch(39.3% 0.210 271.6);

Tailwind

colors: {
  custom: {
    50: '#7b64cb',
    500: '#2827b3',
    950: '#000000',
  },
}

SCSS

$custom: #2827b3;
$custom-light: #7b64cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2827b3",
  "rgb": {
    "r": 40,
    "g": 39,
    "b": 179
  },
  "hsl": {
    "h": 240.429,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.39281,
    "c": 0.20977,
    "h": 271.6
  },
  "luminance": 0.05157
}

Semantic roles & 50–950 ramp

primary

#2827B3

secondary

#C7C86E

accent

#E741E6

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2827B3

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

Preview Lab → · Contrast checker → · Palette generator →