#284FD1#284FD1

#284FD1 is a mid, highly saturated blue. Relative luminance 0.106; OKLCH L 48.7% C 0.205 H 265.9°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#284FD1
RGB	rgb(40, 79, 209)
HSL	hsl(226, 68%, 49%)
HSV	hsv(226, 81%, 82%)
CMYK	cmyk(80.9%, 62.2%, 0%, 18%)
CIE-LAB	lab(38.98, 34.29, -70.60)
CIE-LCH	lch(38.98, 78.48, 295.91°)
OKLab	oklab(48.7% -0.0147 -0.2043)
OKLCH	oklch(48.7% 0.205 265.9)
XYZ	xyz(15.1756, 10.6447, 61.5640)
Luminance	0.1065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FD1 #D1AA28

analogous

#28A4D1 #284FD1 #5628D1

triadic

#284FD1 #D1284F #4FD128

tetradic

#284FD1 #D128A4 #D1AA28 #28D156

square

#284FD1 #D128A4 #D1AA28 #28D156

split-complementary

#284FD1 #D15628 #A4D128

monochromatic

#14286A #1E3C9E #284FD1 #5777DF #8BA0E9

Accessibility & contrast

On white

6.71

#284FD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#284FD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #284FD1

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FD1	#FFFFFF	#000000	##FFFFFF
##284FD1	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064D5

Deuteranopia (green-blind)

#0054CF

Tritanopia (blue-blind)

#007188

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #284fd1;
/* rgb */ color: rgb(40, 79, 209);
/* oklch */ color: oklch(48.7% 0.205 265.9);

Tailwind

colors: {
  custom: {
    50: '#7f80e0',
    500: '#284fd1',
    950: '#000000',
  },
}

SCSS

$custom: #284fd1;
$custom-light: #7f80e0;
$custom-dark: #000000;

JSON

{
  "hex": "#284fd1",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 209
  },
  "hsl": {
    "h": 226.154,
    "s": 67.871,
    "l": 48.824
  },
  "oklch": {
    "l": 0.48699,
    "c": 0.20485,
    "h": 265.9
  },
  "luminance": 0.10647
}

Semantic roles & 50–950 ramp

primary

#284FD1

secondary

#D3C082

accent

#C33DEB

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #284FD1

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

Preview Lab → · Contrast checker → · Palette generator →