#284BA4#284BA4

#284BA4 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.1% C 0.150 H 264.7°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#284BA4
RGB	rgb(40, 75, 164)
HSL	hsl(223, 61%, 40%)
HSV	hsv(223, 76%, 64%)
CMYK	cmyk(75.6%, 54.3%, 0%, 35.7%)
CIE-LAB	lab(34.32, 19.85, -51.74)
CIE-LCH	lch(34.32, 55.42, 290.99°)
OKLab	oklab(44.09% -0.0138 -0.149)
OKLCH	oklch(44.09% 0.15 264.7)
XYZ	xyz(10.0896, 8.1625, 36.1585)
Luminance	0.0816 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284BA4 #A48128

analogous

#2889A4 #284BA4 #4328A4

triadic

#284BA4 #A4284B #4BA428

tetradic

#284BA4 #A42889 #A48128 #28A443

square

#284BA4 #A42889 #A48128 #28A443

split-complementary

#284BA4 #A44328 #89A428

monochromatic

#101E42 #1C3473 #284BA4 #3A64CF #6B8BDB

Accessibility & contrast

On white

7.98

#284BA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#284BA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284BA4

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284BA4	#FFFFFF	#000000	##FFFFFF
##284BA4	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0457A7

Deuteranopia (green-blind)

#004BA2

Tritanopia (blue-blind)

#006170

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284ba4;
/* rgb */ color: rgb(40, 75, 164);
/* oklch */ color: oklch(44.1% 0.150 264.7);

Tailwind

colors: {
  custom: {
    50: '#747cc0',
    500: '#284ba4',
    950: '#000000',
  },
}

SCSS

$custom: #284ba4;
$custom-light: #747cc0;
$custom-dark: #000000;

JSON

{
  "hex": "#284ba4",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 164
  },
  "hsl": {
    "h": 223.065,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.44089,
    "c": 0.14967,
    "h": 264.7
  },
  "luminance": 0.08164
}

Semantic roles & 50–950 ramp

primary

#284BA4

secondary

#C1A866

accent

#B744E4

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284BA4

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

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