#284DD1#284DD1

#284DD1 is a mid, highly saturated blue. Relative luminance 0.104; OKLCH L 48.3% C 0.207 H 266.2°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#284DD1
RGB	rgb(40, 77, 209)
HSL	hsl(227, 68%, 49%)
HSV	hsv(227, 81%, 82%)
CMYK	cmyk(80.9%, 63.2%, 0%, 18%)
CIE-LAB	lab(38.48, 35.57, -71.40)
CIE-LCH	lch(38.48, 79.77, 296.48°)
OKLab	oklab(48.33% -0.0137 -0.2067)
OKLCH	oklch(48.33% 0.207 266.2)
XYZ	xyz(15.0335, 10.3605, 61.5167)
Luminance	0.1036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284DD1 #D1AC28

analogous

#28A2D1 #284DD1 #5828D1

triadic

#284DD1 #D1284D #4DD128

tetradic

#284DD1 #D128A2 #D1AC28 #28D158

square

#284DD1 #D128A2 #D1AC28 #28D158

split-complementary

#284DD1 #D15828 #A2D128

monochromatic

#14276A #1E3A9E #284DD1 #5775DF #8B9FE9

Accessibility & contrast

On white

6.84

#284DD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#284DD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #284DD1

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284DD1	#FFFFFF	#000000	##FFFFFF
##284DD1	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063D5

Deuteranopia (green-blind)

#0053CF

Tritanopia (blue-blind)

#007088

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #284dd1;
/* rgb */ color: rgb(40, 77, 209);
/* oklch */ color: oklch(48.3% 0.207 266.2);

Tailwind

colors: {
  custom: {
    50: '#7f7ee0',
    500: '#284dd1',
    950: '#000000',
  },
}

SCSS

$custom: #284dd1;
$custom-light: #7f7ee0;
$custom-dark: #000000;

JSON

{
  "hex": "#284dd1",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 209
  },
  "hsl": {
    "h": 226.864,
    "s": 67.871,
    "l": 48.824
  },
  "oklch": {
    "l": 0.48333,
    "c": 0.20716,
    "h": 266.2
  },
  "luminance": 0.10362
}

Semantic roles & 50–950 ramp

primary

#284DD1

secondary

#D3C182

accent

#C53DEB

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #284DD1

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

Preview Lab → · Contrast checker → · Palette generator →