#284DBA#284DBA

#284DBA is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.3% C 0.177 H 265.5°. Best body text is #FFFFFF at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#284DBA
RGB	rgb(40, 77, 186)
HSL	hsl(225, 65%, 44%)
HSV	hsv(225, 78%, 73%)
CMYK	cmyk(78.5%, 58.6%, 0%, 27.1%)
CIE-LAB	lab(36.56, 26.96, -61.16)
CIE-LCH	lch(36.56, 66.83, 293.79°)
OKLab	oklab(46.31% -0.0139 -0.1767)
OKLCH	oklch(46.31% 0.177 265.5)
XYZ	xyz(12.3887, 9.3026, 47.5875)
Luminance	0.0930 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284DBA #BA9528

analogous

#2896BA #284DBA #4C28BA

triadic

#284DBA #BA284D #4DBA28

tetradic

#284DBA #BA2896 #BA9528 #28BA4C

square

#284DBA #BA2896 #BA9528 #28BA4C

split-complementary

#284DBA #BA4C28 #96BA28

monochromatic

#122355 #1D3888 #284DBA #486CD8 #7A94E2

Accessibility & contrast

On white

7.34

#284DBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#284DBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284DBA

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284DBA	#FFFFFF	#000000	##FFFFFF
##284DBA	1.00	7.34	2.86	7.34
#FFFFFF	7.34	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBE

Deuteranopia (green-blind)

#004FB8

Tritanopia (blue-blind)

#00697C

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #284dba;
/* rgb */ color: rgb(40, 77, 186);
/* oklch */ color: oklch(46.3% 0.177 265.5);

Tailwind

colors: {
  custom: {
    50: '#797ed0',
    500: '#284dba',
    950: '#000000',
  },
}

SCSS

$custom: #284dba;
$custom-light: #797ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#284dba",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 186
  },
  "hsl": {
    "h": 224.795,
    "s": 64.602,
    "l": 44.314
  },
  "oklch": {
    "l": 0.4631,
    "c": 0.17721,
    "h": 265.5
  },
  "luminance": 0.09304
}

Semantic roles & 50–950 ramp

primary

#284DBA

secondary

#CAB473

accent

#BD40E8

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #284DBA

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

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