#284CA4#284CA4

#284CA4 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.3% C 0.148 H 264.4°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#284CA4
RGB	rgb(40, 76, 164)
HSL	hsl(223, 61%, 40%)
HSV	hsv(223, 76%, 64%)
CMYK	cmyk(75.6%, 53.7%, 0%, 35.7%)
CIE-LAB	lab(34.60, 19.18, -51.29)
CIE-LCH	lch(34.60, 54.76, 290.51°)
OKLab	oklab(44.3% -0.0146 -0.1477)
OKLCH	oklch(44.3% 0.148 264.4)
XYZ	xyz(10.1580, 8.2992, 36.1813)
Luminance	0.0830 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284CA4 #A48028

analogous

#288AA4 #284CA4 #4228A4

triadic

#284CA4 #A4284C #4CA428

tetradic

#284CA4 #A4288A #A48028 #28A442

square

#284CA4 #A4288A #A48028 #28A442

split-complementary

#284CA4 #A44228 #8AA428

monochromatic

#101E42 #1C3573 #284CA4 #3A65CF #6B8CDB

Accessibility & contrast

On white

7.89

#284CA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#284CA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284CA4

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284CA4	#FFFFFF	#000000	##FFFFFF
##284CA4	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)

#0B57A7

Deuteranopia (green-blind)

#004CA2

Tritanopia (blue-blind)

#006170

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284ca4;
/* rgb */ color: rgb(40, 76, 164);
/* oklch */ color: oklch(44.3% 0.148 264.4);

Tailwind

colors: {
  custom: {
    50: '#747dc0',
    500: '#284ca4',
    950: '#000000',
  },
}

SCSS

$custom: #284ca4;
$custom-light: #747dc0;
$custom-dark: #000000;

JSON

{
  "hex": "#284ca4",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 164
  },
  "hsl": {
    "h": 222.581,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.44301,
    "c": 0.14841,
    "h": 264.4
  },
  "luminance": 0.083
}

Semantic roles & 50–950 ramp

primary

#284CA4

secondary

#C1A766

accent

#B544E4

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284CA4

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

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