#4279D7#4279D7

#4279D7 is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.6% C 0.156 H 260.4°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#4279D7
RGB	rgb(66, 121, 215)
HSL	hsl(218, 65%, 55%)
HSV	hsv(218, 69%, 84%)
CMYK	cmyk(69.3%, 43.7%, 0%, 15.7%)
CIE-LAB	lab(51.54, 12.81, -53.63)
CIE-LCH	lch(51.54, 55.14, 283.43°)
OKLab	oklab(58.62% -0.026 -0.1534)
OKLCH	oklch(58.62% 0.156 260.4)
XYZ	xyz(21.3455, 19.7371, 66.9615)
Luminance	0.1974 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279D7 #D7A042

analogous

#42C4D7 #4279D7 #5542D7

triadic

#4279D7 #D74279 #79D742

tetradic

#4279D7 #D742C4 #D7A042 #42D755

square

#4279D7 #D742C4 #D7A042 #42D755

split-complementary

#4279D7 #D75542 #C4D742

monochromatic

#1C4283 #265BB5 #4279D7 #759DE2 #A7C1EC

Accessibility & contrast

On white

4.24

#4279D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#4279D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279D7

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279D7	#FFFFFF	#000000	##000000
##4279D7	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B82DB

Deuteranopia (green-blind)

#3074D5

Tritanopia (blue-blind)

#008F9D

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4279d7;
/* rgb */ color: rgb(66, 121, 215);
/* oklch */ color: oklch(58.6% 0.156 260.4);

Tailwind

colors: {
  custom: {
    50: '#879fe4',
    500: '#4279d7',
    950: '#000000',
  },
}

SCSS

$custom: #4279d7;
$custom-light: #879fe4;
$custom-dark: #000000;

JSON

{
  "hex": "#4279d7",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 215
  },
  "hsl": {
    "h": 217.852,
    "s": 65.066,
    "l": 55.098
  },
  "oklch": {
    "l": 0.58624,
    "c": 0.15555,
    "h": 260.4
  },
  "luminance": 0.19739
}

Semantic roles & 50–950 ramp

primary

#4279D7

secondary

#DAC39B

accent

#AA40E8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E15

muted

#7D7E84

Preview Lab

Preview with #4279D7

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

Preview Lab → · Contrast checker → · Palette generator →