#42519B#42519B

#42519B is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.1% C 0.121 H 272.2°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#42519B
RGB	rgb(66, 81, 155)
HSL	hsl(230, 40%, 43%)
HSV	hsv(230, 57%, 61%)
CMYK	cmyk(57.4%, 47.7%, 0%, 39.2%)
CIE-LAB	lab(36.76, 17.01, -42.33)
CIE-LCH	lch(36.76, 45.62, 291.89°)
OKLab	oklab(46.12% 0.0047 -0.1207)
OKLCH	oklch(46.12% 0.121 272.2)
XYZ	xyz(11.1037, 9.4089, 32.2350)
Luminance	0.0941 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42519B #9B8C42

analogous

#427D9B #42519B #5F429B

triadic

#42519B #9B4251 #519B42

tetradic

#42519B #9B427D #9B8C42 #429B5F

square

#42519B #9B427D #9B8C42 #429B5F

split-complementary

#42519B #9B5F42 #7D9B42

monochromatic

#1D2445 #303B70 #42519B #5F6FBB #8A95CD

Accessibility & contrast

On white

7.29

#42519B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#42519B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42519B

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42519B	#FFFFFF	#000000	##FFFFFF
##42519B	1.00	7.29	2.88	7.29
#FFFFFF	7.29	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E5B9E

Deuteranopia (green-blind)

#225399

Tritanopia (blue-blind)

#0B616E

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #42519b;
/* rgb */ color: rgb(66, 81, 155);
/* oklch */ color: oklch(46.1% 0.121 272.2);

Tailwind

colors: {
  custom: {
    50: '#7e81b9',
    500: '#42519b',
    950: '#000000',
  },
}

SCSS

$custom: #42519b;
$custom-light: #7e81b9;
$custom-dark: #000000;

JSON

{
  "hex": "#42519b",
  "rgb": {
    "r": 66,
    "g": 81,
    "b": 155
  },
  "hsl": {
    "h": 229.888,
    "s": 40.271,
    "l": 43.333
  },
  "oklch": {
    "l": 0.46118,
    "c": 0.1208,
    "h": 272.2
  },
  "luminance": 0.0941
}

Semantic roles & 50–950 ramp

primary

#42519B

secondary

#B8AF81

accent

#BC58D0

background

#F8F7FB

surface

#EFEEF6

border

#CAC9D0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #42519B

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

Preview Lab → · Contrast checker → · Palette generator →