#4280DE#4280DE

#4280DE is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.6% C 0.157 H 258.6°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#4280DE
RGB	rgb(66, 128, 222)
HSL	hsl(216, 70%, 56%)
HSV	hsv(216, 70%, 87%)
CMYK	cmyk(70.3%, 42.3%, 0%, 12.9%)
CIE-LAB	lab(53.89, 11.00, -53.82)
CIE-LCH	lch(53.89, 54.94, 281.55°)
OKLab	oklab(60.57% -0.031 -0.1538)
OKLCH	oklch(60.57% 0.157 258.6)
XYZ	xyz(23.1460, 21.8681, 72.0942)
Luminance	0.2187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4280DE #DEA042

analogous

#42CEDE #4280DE #5242DE

triadic

#4280DE #DE4280 #80DE42

tetradic

#4280DE #DE42CE #DEA042 #42DE52

square

#4280DE #DE42CE #DEA042 #42DE52

split-complementary

#4280DE #DE5242 #CEDE42

monochromatic

#19478D #2261C1 #4280DE #76A3E7 #AAC6F0

Accessibility & contrast

On white

3.91

#4280DE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#4280DE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4280DE

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4280DE	#FFFFFF	#000000	##000000
##4280DE	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5389E2

Deuteranopia (green-blind)

#387ADC

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4280de;
/* rgb */ color: rgb(66, 128, 222);
/* oklch */ color: oklch(60.6% 0.157 258.6);

Tailwind

colors: {
  custom: {
    50: '#88a4e9',
    500: '#4280de',
    950: '#000000',
  },
}

SCSS

$custom: #4280de;
$custom-light: #88a4e9;
$custom-dark: #000000;

JSON

{
  "hex": "#4280de",
  "rgb": {
    "r": 66,
    "g": 128,
    "b": 222
  },
  "hsl": {
    "h": 216.154,
    "s": 70.27,
    "l": 56.471
  },
  "oklch": {
    "l": 0.60569,
    "c": 0.15691,
    "h": 258.6
  },
  "luminance": 0.21871
}

Semantic roles & 50–950 ramp

primary

#4280DE

secondary

#DEC49E

accent

#A63BED

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4280DE

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

Preview Lab → · Contrast checker → · Palette generator →