#2817B4#2817B4

#2817B4 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.7% C 0.223 H 272.5°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#2817B4
RGB	rgb(40, 23, 180)
HSL	hsl(246, 77%, 40%)
HSV	hsv(246, 87%, 71%)
CMYK	cmyk(77.8%, 87.2%, 0%, 29.4%)
CIE-LAB	lab(24.82, 55.41, -76.94)
CIE-LCH	lch(24.82, 94.81, 305.76°)
OKLab	oklab(37.69% 0.0096 -0.2224)
OKLCH	oklch(37.69% 0.223 272.5)
XYZ	xyz(9.4169, 4.3582, 43.5161)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2817B4 #A3B417

analogous

#1754B4 #2817B4 #7717B4

triadic

#2817B4 #B42817 #17B428

tetradic

#2817B4 #B41754 #A3B417 #17B477

square

#2817B4 #B41754 #A3B417 #17B477

split-complementary

#2817B4 #B47717 #54B417

monochromatic

#100947 #1C107E #2817B4 #3A25E3 #6B5BEA

Accessibility & contrast

On white

11.22

#2817B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#2817B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2817B4

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2817B4	#FFFFFF	#000000	##FFFFFF
##2817B4	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B8

Deuteranopia (green-blind)

#0033B1

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2817b4;
/* rgb */ color: rgb(40, 23, 180);
/* oklch */ color: oklch(37.7% 0.223 272.5);

Tailwind

colors: {
  custom: {
    50: '#7c5ccc',
    500: '#2817b4',
    950: '#000000',
  },
}

SCSS

$custom: #2817b4;
$custom-light: #7c5ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#2817b4",
  "rgb": {
    "r": 40,
    "g": 23,
    "b": 180
  },
  "hsl": {
    "h": 246.497,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.37687,
    "c": 0.22265,
    "h": 272.5
  },
  "luminance": 0.04359
}

Semantic roles & 50–950 ramp

primary

#2817B4

secondary

#C1CE59

accent

#F434DF

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0414

muted

#7D7982

Preview Lab

Preview with #2817B4

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

Preview Lab → · Contrast checker → · Palette generator →