#284FBC#284FBC

#284FBC is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.9% C 0.177 H 265.1°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#284FBC
RGB	rgb(40, 79, 188)
HSL	hsl(224, 65%, 45%)
HSV	hsv(224, 79%, 74%)
CMYK	cmyk(78.7%, 58%, 0%, 26.3%)
CIE-LAB	lab(37.25, 26.40, -61.21)
CIE-LCH	lch(37.25, 66.66, 293.33°)
OKLab	oklab(46.88% -0.0151 -0.1768)
OKLCH	oklch(46.88% 0.177 265.1)
XYZ	xyz(12.7449, 9.6724, 48.7625)
Luminance	0.0967 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FBC #BC9528

analogous

#2899BC #284FBC #4B28BC

triadic

#284FBC #BC284F #4FBC28

tetradic

#284FBC #BC2899 #BC9528 #28BC4B

square

#284FBC #BC2899 #BC9528 #28BC4B

split-complementary

#284FBC #BC4B28 #99BC28

monochromatic

#132557 #1D3A8A #284FBC #496FD8 #7B97E3

Accessibility & contrast

On white

7.16

#284FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#284FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FBC

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FBC	#FFFFFF	#000000	##FFFFFF
##284FBC	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FC0

Deuteranopia (green-blind)

#0051BA

Tritanopia (blue-blind)

#006A7E

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #284fbc;
/* rgb */ color: rgb(40, 79, 188);
/* oklch */ color: oklch(46.9% 0.177 265.1);

Tailwind

colors: {
  custom: {
    50: '#7a7fd1',
    500: '#284fbc',
    950: '#000000',
  },
}

SCSS

$custom: #284fbc;
$custom-light: #7a7fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#284fbc",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 188
  },
  "hsl": {
    "h": 224.189,
    "s": 64.912,
    "l": 44.706
  },
  "oklch": {
    "l": 0.46875,
    "c": 0.17744,
    "h": 265.1
  },
  "luminance": 0.09674
}

Semantic roles & 50–950 ramp

primary

#284FBC

secondary

#CBB475

accent

#BC40E8

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #284FBC

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

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