#284DA4#284DA4

#284DA4 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.5% C 0.147 H 264.0°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#284DA4
RGB	rgb(40, 77, 164)
HSL	hsl(222, 61%, 40%)
HSV	hsv(222, 76%, 64%)
CMYK	cmyk(75.6%, 53%, 0%, 35.7%)
CIE-LAB	lab(34.88, 18.51, -50.84)
CIE-LCH	lch(34.88, 54.10, 290.01°)
OKLab	oklab(44.51% -0.0154 -0.1463)
OKLCH	oklch(44.51% 0.147 264)
XYZ	xyz(10.2274, 8.4381, 36.2045)
Luminance	0.0844 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284DA4 #A47F28

analogous

#288BA4 #284DA4 #4128A4

triadic

#284DA4 #A4284D #4DA428

tetradic

#284DA4 #A4288B #A47F28 #28A441

square

#284DA4 #A4288B #A47F28 #28A441

split-complementary

#284DA4 #A44128 #8BA428

monochromatic

#101F42 #1C3673 #284DA4 #3A67CF #6B8DDB

Accessibility & contrast

On white

7.81

#284DA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#284DA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284DA4

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284DA4	#FFFFFF	#000000	##FFFFFF
##284DA4	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1058A7

Deuteranopia (green-blind)

#004DA2

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #284da4;
/* rgb */ color: rgb(40, 77, 164);
/* oklch */ color: oklch(44.5% 0.147 264.0);

Tailwind

colors: {
  custom: {
    50: '#747ec0',
    500: '#284da4',
    950: '#000000',
  },
}

SCSS

$custom: #284da4;
$custom-light: #747ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#284da4",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 164
  },
  "hsl": {
    "h": 222.097,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.44514,
    "c": 0.14714,
    "h": 264
  },
  "luminance": 0.08439
}

Semantic roles & 50–950 ramp

primary

#284DA4

secondary

#C1A666

accent

#B444E4

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284DA4

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

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