#4251D2#4251D2

#4251D2 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.3% C 0.197 H 272.1°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#4251D2
RGB	rgb(66, 81, 210)
HSL	hsl(234, 62%, 54%)
HSV	hsv(234, 69%, 82%)
CMYK	cmyk(68.6%, 61.4%, 0%, 17.6%)
CIE-LAB	lab(40.73, 36.19, -68.26)
CIE-LCH	lch(40.73, 77.26, 297.93°)
OKLab	oklab(50.34% 0.0072 -0.1969)
OKLCH	oklch(50.34% 0.197 272.1)
XYZ	xyz(16.8181, 11.6946, 62.3312)
Luminance	0.1170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4251D2 #D2C342

analogous

#4299D2 #4251D2 #7B42D2

triadic

#4251D2 #D24251 #51D242

tetradic

#4251D2 #D24299 #D2C342 #42D27B

square

#4251D2 #D24299 #D2C342 #42D27B

split-complementary

#4251D2 #D27B42 #99D242

monochromatic

#1E277C #2937AD #4251D2 #737FDE #A5ACEA

Accessibility & contrast

On white

6.29

#4251D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#4251D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4251D2

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4251D2	#FFFFFF	#000000	##FFFFFF
##4251D2	1.00	6.29	3.34	6.29
#FFFFFF	6.29	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067D6

Deuteranopia (green-blind)

#005ACF

Tritanopia (blue-blind)

#00728A

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4251d2;
/* rgb */ color: rgb(66, 81, 210);
/* oklch */ color: oklch(50.3% 0.197 272.1);

Tailwind

colors: {
  custom: {
    50: '#8882e1',
    500: '#4251d2',
    950: '#000000',
  },
}

SCSS

$custom: #4251d2;
$custom-light: #8882e1;
$custom-dark: #000000;

JSON

{
  "hex": "#4251d2",
  "rgb": {
    "r": 66,
    "g": 81,
    "b": 210
  },
  "hsl": {
    "h": 233.75,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.50341,
    "c": 0.19708,
    "h": 272.1
  },
  "luminance": 0.11696
}

Semantic roles & 50–950 ramp

primary

#4251D2

secondary

#D7D099

accent

#D443E5

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #4251D2

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

Preview Lab → · Contrast checker → · Palette generator →