#4274DF#4274DF

#4274DF is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.1% C 0.172 H 263.2°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#4274DF
RGB	rgb(66, 116, 223)
HSL	hsl(221, 71%, 57%)
HSV	hsv(221, 70%, 87%)
CMYK	cmyk(70.4%, 48%, 0%, 12.5%)
CIE-LAB	lab(50.66, 18.78, -59.57)
CIE-LCH	lch(50.66, 62.46, 287.50°)
OKLab	oklab(58.1% -0.0203 -0.1709)
OKLCH	oklch(58.1% 0.172 263.2)
XYZ	xyz(21.8067, 18.9745, 72.3109)
Luminance	0.1898 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4274DF #DFAD42

analogous

#42C2DF #4274DF #5F42DF

triadic

#4274DF #DF4274 #74DF42

tetradic

#4274DF #DF42C2 #DFAD42 #42DF5F

square

#4274DF #DF42C2 #DFAD42 #42DF5F

split-complementary

#4274DF #DF5F42 #C2DF42

monochromatic

#183E8E #2155C3 #4274DF #769AE8 #ABC1F1

Accessibility & contrast

On white

4.38

#4274DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#4274DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4274DF

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4274DF	#FFFFFF	#000000	##000000
##4274DF	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3980E3

Deuteranopia (green-blind)

#0772DD

Tritanopia (blue-blind)

#008D9F

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4274df;
/* rgb */ color: rgb(66, 116, 223);
/* oklch */ color: oklch(58.1% 0.172 263.2);

Tailwind

colors: {
  custom: {
    50: '#899bea',
    500: '#4274df',
    950: '#000000',
  },
}

SCSS

$custom: #4274df;
$custom-light: #899bea;
$custom-dark: #000000;

JSON

{
  "hex": "#4274df",
  "rgb": {
    "r": 66,
    "g": 116,
    "b": 223
  },
  "hsl": {
    "h": 220.892,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.58103,
    "c": 0.1721,
    "h": 263.2
  },
  "luminance": 0.18977
}

Semantic roles & 50–950 ramp

primary

#4274DF

secondary

#DFCA9E

accent

#B53AEE

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4274DF

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

Preview Lab → · Contrast checker → · Palette generator →