#284FBF#284FBF

#284FBF is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.1% C 0.181 H 265.3°. Best body text is #FFFFFF at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#284FBF
RGB	rgb(40, 79, 191)
HSL	hsl(225, 65%, 45%)
HSV	hsv(225, 79%, 75%)
CMYK	cmyk(79.1%, 58.6%, 0%, 25.1%)
CIE-LAB	lab(37.49, 27.54, -62.58)
CIE-LCH	lch(37.49, 68.37, 293.76°)
OKLab	oklab(47.13% -0.015 -0.1808)
OKLCH	oklch(47.13% 0.181 265.3)
XYZ	xyz(13.0717, 9.8031, 50.4834)
Luminance	0.0980 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FBF #BF9828

analogous

#289BBF #284FBF #4C28BF

triadic

#284FBF #BF284F #4FBF28

tetradic

#284FBF #BF289B #BF9828 #28BF4C

square

#284FBF #BF289B #BF9828 #28BF4C

split-complementary

#284FBF #BF4C28 #9BBF28

monochromatic

#13255A #1D3A8C #284FBF #4B70D9 #7E98E4

Accessibility & contrast

On white

7.09

#284FBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#284FBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FBF

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FBF	#FFFFFF	#000000	##FFFFFF
##284FBF	1.00	7.09	2.96	7.09
#FFFFFF	7.09	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FC3

Deuteranopia (green-blind)

#0051BD

Tritanopia (blue-blind)

#006B7F

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #284fbf;
/* rgb */ color: rgb(40, 79, 191);
/* oklch */ color: oklch(47.1% 0.181 265.3);

Tailwind

colors: {
  custom: {
    50: '#7a7fd3',
    500: '#284fbf',
    950: '#000000',
  },
}

SCSS

$custom: #284fbf;
$custom-light: #7a7fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#284fbf",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 191
  },
  "hsl": {
    "h": 224.503,
    "s": 65.368,
    "l": 45.294
  },
  "oklch": {
    "l": 0.47129,
    "c": 0.18143,
    "h": 265.3
  },
  "luminance": 0.09805
}

Semantic roles & 50–950 ramp

primary

#284FBF

secondary

#CCB677

accent

#BD3FE8

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #284FBF

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

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