#4280D7#4280D7

#4280D7 is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.1% C 0.148 H 257.3°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#4280D7
RGB	rgb(66, 128, 215)
HSL	hsl(215, 65%, 55%)
HSV	hsv(215, 69%, 84%)
CMYK	cmyk(69.3%, 40.5%, 0%, 15.7%)
CIE-LAB	lab(53.49, 8.51, -50.51)
CIE-LCH	lch(53.49, 51.22, 279.56°)
OKLab	oklab(60.14% -0.0324 -0.1441)
OKLCH	oklch(60.14% 0.148 257.3)
XYZ	xyz(22.2272, 21.5006, 67.2554)
Luminance	0.2150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4280D7 #D79942

analogous

#42CAD7 #4280D7 #4F42D7

triadic

#4280D7 #D74280 #80D742

tetradic

#4280D7 #D742CA #D79942 #42D74F

square

#4280D7 #D742CA #D79942 #42D74F

split-complementary

#4280D7 #D74F42 #CAD742

monochromatic

#1C4783 #2662B5 #4280D7 #75A2E2 #A7C4EC

Accessibility & contrast

On white

3.96

#4280D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#4280D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4280D7

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4280D7	#FFFFFF	#000000	##000000
##4280D7	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5787DA

Deuteranopia (green-blind)

#4079D5

Tritanopia (blue-blind)

#0094A1

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #4280d7;
/* rgb */ color: rgb(66, 128, 215);
/* oklch */ color: oklch(60.1% 0.148 257.3);

Tailwind

colors: {
  custom: {
    50: '#87a4e4',
    500: '#4280d7',
    950: '#000000',
  },
}

SCSS

$custom: #4280d7;
$custom-light: #87a4e4;
$custom-dark: #000000;

JSON

{
  "hex": "#4280d7",
  "rgb": {
    "r": 66,
    "g": 128,
    "b": 215
  },
  "hsl": {
    "h": 215.034,
    "s": 65.066,
    "l": 55.098
  },
  "oklch": {
    "l": 0.60136,
    "c": 0.14771,
    "h": 257.3
  },
  "luminance": 0.21503
}

Semantic roles & 50–950 ramp

primary

#4280D7

secondary

#DAC09B

accent

#A240E8

background

#F8FAFE

surface

#F0F3FC

border

#CBCDD5

text

#0D0F15

muted

#7D7F84

Preview Lab

Preview with #4280D7

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

Preview Lab → · Contrast checker → · Palette generator →