#284BA8#284BA8

#284BA8 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.4% C 0.155 H 265.0°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#284BA8
RGB	rgb(40, 75, 168)
HSL	hsl(224, 62%, 41%)
HSV	hsv(224, 76%, 66%)
CMYK	cmyk(76.2%, 55.4%, 0%, 34.1%)
CIE-LAB	lab(34.62, 21.40, -53.65)
CIE-LCH	lch(34.62, 57.76, 291.74°)
OKLab	oklab(44.41% -0.0134 -0.1546)
OKLCH	oklch(44.41% 0.155 265)
XYZ	xyz(10.4565, 8.3093, 38.0910)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284BA8 #A88528

analogous

#288BA8 #284BA8 #4528A8

triadic

#284BA8 #A8284B #4BA828

tetradic

#284BA8 #A8288B #A88528 #28A845

square

#284BA8 #A8288B #A88528 #28A845

split-complementary

#284BA8 #A84528 #8BA828

monochromatic

#101F45 #1C3577 #284BA8 #3D65D1 #6E8CDC

Accessibility & contrast

On white

7.89

#284BA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#284BA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284BA8

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284BA8	#FFFFFF	#000000	##FFFFFF
##284BA8	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AB

Deuteranopia (green-blind)

#004CA6

Tritanopia (blue-blind)

#006272

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284ba8;
/* rgb */ color: rgb(40, 75, 168);
/* oklch */ color: oklch(44.4% 0.155 265.0);

Tailwind

colors: {
  custom: {
    50: '#757cc3',
    500: '#284ba8',
    950: '#000000',
  },
}

SCSS

$custom: #284ba8;
$custom-light: #757cc3;
$custom-dark: #000000;

JSON

{
  "hex": "#284ba8",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 168
  },
  "hsl": {
    "h": 223.594,
    "s": 61.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.4441,
    "c": 0.15523,
    "h": 265
  },
  "luminance": 0.0831
}

Semantic roles & 50–950 ramp

primary

#284BA8

secondary

#C3AA69

accent

#B843E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #284BA8

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

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