#4280DA#4280DA

#4280DA is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.3% C 0.152 H 257.9°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#4280DA
RGB	rgb(66, 128, 218)
HSL	hsl(216, 67%, 56%)
HSV	hsv(216, 70%, 85%)
CMYK	cmyk(69.7%, 41.3%, 0%, 14.5%)
CIE-LAB	lab(53.66, 9.57, -51.94)
CIE-LCH	lch(53.66, 52.81, 280.45°)
OKLab	oklab(60.32% -0.0318 -0.1483)
OKLCH	oklch(60.32% 0.152 257.9)
XYZ	xyz(22.6162, 21.6562, 69.3042)
Luminance	0.2166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4280DA #DA9C42

analogous

#42CCDA #4280DA #5042DA

triadic

#4280DA #DA4280 #80DA42

tetradic

#4280DA #DA42CC #DA9C42 #42DA50

square

#4280DA #DA42CC #DA9C42 #42DA50

split-complementary

#4280DA #DA5042 #CCDA42

monochromatic

#1A4787 #2462BA #4280DA #75A2E4 #A8C5EE

Accessibility & contrast

On white

3.94

#4280DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#4280DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4280DA

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4280DA	#FFFFFF	#000000	##000000
##4280DA	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5588DE

Deuteranopia (green-blind)

#3D7AD8

Tritanopia (blue-blind)

#0095A2

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #4280da;
/* rgb */ color: rgb(66, 128, 218);
/* oklch */ color: oklch(60.3% 0.152 257.9);

Tailwind

colors: {
  custom: {
    50: '#87a4e6',
    500: '#4280da',
    950: '#000000',
  },
}

SCSS

$custom: #4280da;
$custom-light: #87a4e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4280da",
  "rgb": {
    "r": 66,
    "g": 128,
    "b": 218
  },
  "hsl": {
    "h": 215.526,
    "s": 67.257,
    "l": 55.686
  },
  "oklch": {
    "l": 0.6032,
    "c": 0.15165,
    "h": 257.9
  },
  "luminance": 0.21659
}

Semantic roles & 50–950 ramp

primary

#4280DA

secondary

#DBC29C

accent

#A43EEA

background

#F9FAFE

surface

#F1F3FC

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4280DA

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

Preview Lab → · Contrast checker → · Palette generator →