#4275DC#4275DC

#4275DC is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.1% C 0.167 H 262.6°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#4275DC
RGB	rgb(66, 117, 220)
HSL	hsl(220, 69%, 56%)
HSV	hsv(220, 70%, 86%)
CMYK	cmyk(70%, 46.8%, 0%, 13.7%)
CIE-LAB	lab(50.74, 17.08, -57.74)
CIE-LCH	lch(50.74, 60.21, 286.48°)
OKLab	oklab(58.11% -0.0216 -0.1655)
OKLCH	oklch(58.11% 0.167 262.6)
XYZ	xyz(21.5217, 19.0459, 70.2383)
Luminance	0.1905 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4275DC #DCA942

analogous

#42C2DC #4275DC #5C42DC

triadic

#4275DC #DC4275 #75DC42

tetradic

#4275DC #DC42C2 #DCA942 #42DC5C

square

#4275DC #DC42C2 #DCA942 #42DC5C

split-complementary

#4275DC #DC5C42 #C2DC42

monochromatic

#1A3F8A #2356BE #4275DC #769BE6 #A9C0EF

Accessibility & contrast

On white

4.37

#4275DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#4275DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4275DC

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4275DC	#FFFFFF	#000000	##000000
##4275DC	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E80E0

Deuteranopia (green-blind)

#1972DA

Tritanopia (blue-blind)

#008D9E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4275dc;
/* rgb */ color: rgb(66, 117, 220);
/* oklch */ color: oklch(58.1% 0.167 262.6);

Tailwind

colors: {
  custom: {
    50: '#889ce7',
    500: '#4275dc',
    950: '#000000',
  },
}

SCSS

$custom: #4275dc;
$custom-light: #889ce7;
$custom-dark: #000000;

JSON

{
  "hex": "#4275dc",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 220
  },
  "hsl": {
    "h": 220.13,
    "s": 68.75,
    "l": 56.078
  },
  "oklch": {
    "l": 0.58107,
    "c": 0.16691,
    "h": 262.6
  },
  "luminance": 0.19048
}

Semantic roles & 50–950 ramp

primary

#4275DC

secondary

#DDC89D

accent

#B23CEC

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4275DC

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

Preview Lab → · Contrast checker → · Palette generator →