#4275D7#4275D7

#4275D7 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 57.8% C 0.160 H 262.0°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#4275D7
RGB	rgb(66, 117, 215)
HSL	hsl(219, 65%, 55%)
HSV	hsv(219, 69%, 84%)
CMYK	cmyk(69.3%, 45.6%, 0%, 15.7%)
CIE-LAB	lab(50.43, 15.29, -55.40)
CIE-LCH	lch(50.43, 57.47, 285.43°)
OKLab	oklab(57.77% -0.0223 -0.1586)
OKLCH	oklch(57.77% 0.16 262)
XYZ	xyz(20.8694, 18.7850, 66.8028)
Luminance	0.1879 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4275D7 #D7A442

analogous

#42C0D7 #4275D7 #5942D7

triadic

#4275D7 #D74275 #75D742

tetradic

#4275D7 #D742C0 #D7A442 #42D759

square

#4275D7 #D742C0 #D7A442 #42D759

split-complementary

#4275D7 #D75942 #C0D742

monochromatic

#1C3F83 #2657B5 #4275D7 #759AE2 #A7BFEC

Accessibility & contrast

On white

4.41

#4275D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#4275D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4275D7

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4275D7	#FFFFFF	#000000	##000000
##4275D7	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#437FDB

Deuteranopia (green-blind)

#2572D5

Tritanopia (blue-blind)

#008C9B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4275d7;
/* rgb */ color: rgb(66, 117, 215);
/* oklch */ color: oklch(57.8% 0.160 262.0);

Tailwind

colors: {
  custom: {
    50: '#879ce4',
    500: '#4275d7',
    950: '#000000',
  },
}

SCSS

$custom: #4275d7;
$custom-light: #879ce4;
$custom-dark: #000000;

JSON

{
  "hex": "#4275d7",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 215
  },
  "hsl": {
    "h": 219.463,
    "s": 65.066,
    "l": 55.098
  },
  "oklch": {
    "l": 0.57774,
    "c": 0.16021,
    "h": 262
  },
  "luminance": 0.18787
}

Semantic roles & 50–950 ramp

primary

#4275D7

secondary

#DAC49B

accent

#AE40E8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #4275D7

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

Preview Lab → · Contrast checker → · Palette generator →