#284DA2#284DA2

#284DA2 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.4% C 0.144 H 263.8°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#284DA2
RGB	rgb(40, 77, 162)
HSL	hsl(222, 60%, 40%)
HSV	hsv(222, 75%, 64%)
CMYK	cmyk(75.3%, 52.5%, 0%, 36.5%)
CIE-LAB	lab(34.73, 17.74, -49.87)
CIE-LCH	lch(34.73, 52.93, 289.58°)
OKLab	oklab(44.36% -0.0156 -0.1435)
OKLCH	oklch(44.36% 0.144 263.8)
XYZ	xyz(10.0482, 8.3664, 35.2607)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284DA2 #A27D28

analogous

#288AA2 #284DA2 #4028A2

triadic

#284DA2 #A2284D #4DA228

tetradic

#284DA2 #A2288A #A27D28 #28A240

square

#284DA2 #A2288A #A27D28 #28A240

split-complementary

#284DA2 #A24028 #8AA228

monochromatic

#101E40 #1C3671 #284DA2 #3966CE #6A8CDA

Accessibility & contrast

On white

7.85

#284DA2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#284DA2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284DA2

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284DA2	#FFFFFF	#000000	##FFFFFF
##284DA2	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1558A5

Deuteranopia (green-blind)

#004CA0

Tritanopia (blue-blind)

#006170

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #284da2;
/* rgb */ color: rgb(40, 77, 162);
/* oklch */ color: oklch(44.4% 0.144 263.8);

Tailwind

colors: {
  custom: {
    50: '#747ebe',
    500: '#284da2',
    950: '#000000',
  },
}

SCSS

$custom: #284da2;
$custom-light: #747ebe;
$custom-dark: #000000;

JSON

{
  "hex": "#284da2",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 162
  },
  "hsl": {
    "h": 221.803,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.44358,
    "c": 0.14433,
    "h": 263.8
  },
  "luminance": 0.08368
}

Semantic roles & 50–950 ramp

primary

#284DA2

secondary

#C1A565

accent

#B344E4

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284DA2

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

Preview Lab → · Contrast checker → · Palette generator →