#284CB7#284CB7

#284CB7 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.9% C 0.174 H 265.6°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#284CB7
RGB	rgb(40, 76, 183)
HSL	hsl(225, 64%, 44%)
HSV	hsv(225, 78%, 72%)
CMYK	cmyk(78.1%, 58.5%, 0%, 28.2%)
CIE-LAB	lab(36.06, 26.48, -60.21)
CIE-LCH	lch(36.06, 65.78, 293.74°)
OKLab	oklab(45.86% -0.0133 -0.1739)
OKLCH	oklch(45.86% 0.174 265.6)
XYZ	xyz(12.0037, 9.0375, 45.9023)
Luminance	0.0904 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284CB7 #B79328

analogous

#2893B7 #284CB7 #4B28B7

triadic

#284CB7 #B7284C #4CB728

tetradic

#284CB7 #B72893 #B79328 #28B74B

square

#284CB7 #B72893 #B79328 #28B74B

split-complementary

#284CB7 #B74B28 #93B728

monochromatic

#122253 #1D3785 #284CB7 #466AD6 #7892E1

Accessibility & contrast

On white

7.48

#284CB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#284CB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284CB7

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284CB7	#FFFFFF	#000000	##FFFFFF
##284CB7	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBB

Deuteranopia (green-blind)

#004EB5

Tritanopia (blue-blind)

#00677A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #284cb7;
/* rgb */ color: rgb(40, 76, 183);
/* oklch */ color: oklch(45.9% 0.174 265.6);

Tailwind

colors: {
  custom: {
    50: '#797dcd',
    500: '#284cb7',
    950: '#000000',
  },
}

SCSS

$custom: #284cb7;
$custom-light: #797dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#284cb7",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 183
  },
  "hsl": {
    "h": 224.895,
    "s": 64.126,
    "l": 43.725
  },
  "oklch": {
    "l": 0.45858,
    "c": 0.17443,
    "h": 265.6
  },
  "luminance": 0.09039
}

Semantic roles & 50–950 ramp

primary

#284CB7

secondary

#C9B372

accent

#BD41E7

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #284CB7

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

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