#284DA9#284DA9

#284DA9 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.9% C 0.154 H 264.5°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#284DA9
RGB	rgb(40, 77, 169)
HSL	hsl(223, 62%, 41%)
HSV	hsv(223, 76%, 66%)
CMYK	cmyk(76.3%, 54.4%, 0%, 33.7%)
CIE-LAB	lab(35.25, 20.44, -53.23)
CIE-LCH	lch(35.25, 57.02, 291.01°)
OKLab	oklab(44.91% -0.0149 -0.1534)
OKLCH	oklch(44.91% 0.154 264.5)
XYZ	xyz(10.6878, 8.6223, 38.6294)
Luminance	0.0862 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284DA9 #A98428

analogous

#288DA9 #284DA9 #4428A9

triadic

#284DA9 #A9284D #4DA928

tetradic

#284DA9 #A9288D #A98428 #28A944

square

#284DA9 #A9288D #A98428 #28A944

split-complementary

#284DA9 #A94428 #8DA928

monochromatic

#112046 #1C3678 #284DA9 #3D68D1 #6F8EDD

Accessibility & contrast

On white

7.71

#284DA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#284DA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284DA9

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284DA9	#FFFFFF	#000000	##FFFFFF
##284DA9	1.00	7.71	2.72	7.71
#FFFFFF	7.71	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059AC

Deuteranopia (green-blind)

#004DA7

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #284da9;
/* rgb */ color: rgb(40, 77, 169);
/* oklch */ color: oklch(44.9% 0.154 264.5);

Tailwind

colors: {
  custom: {
    50: '#757ec3',
    500: '#284da9',
    950: '#000000',
  },
}

SCSS

$custom: #284da9;
$custom-light: #757ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#284da9",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 169
  },
  "hsl": {
    "h": 222.791,
    "s": 61.722,
    "l": 40.98
  },
  "oklch": {
    "l": 0.44909,
    "c": 0.15409,
    "h": 264.5
  },
  "luminance": 0.08623
}

Semantic roles & 50–950 ramp

primary

#284DA9

secondary

#C4AA69

accent

#B643E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #284DA9

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

Preview Lab → · Contrast checker → · Palette generator →