#4237DA#4237DA

#4237DA is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 47.1% C 0.235 H 275.5°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#4237DA
RGB	rgb(66, 55, 218)
HSL	hsl(244, 69%, 54%)
HSV	hsv(244, 75%, 85%)
CMYK	cmyk(69.7%, 74.8%, 0%, 14.5%)
CIE-LAB	lab(35.89, 53.92, -80.80)
CIE-LCH	lch(35.89, 97.14, 303.72°)
OKLab	oklab(47.07% 0.0223 -0.2336)
OKLCH	oklch(47.07% 0.235 275.5)
XYZ	xyz(16.2637, 8.9510, 67.1867)
Luminance	0.0895 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.59

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4237DA #CFDA37

analogous

#377DDA #4237DA #9337DA

triadic

#4237DA #DA4237 #37DA42

tetradic

#4237DA #DA377D #CFDA37 #37DA93

square

#4237DA #DA377D #CFDA37 #37DA93

split-complementary

#4237DA #DA9337 #7DDA37

monochromatic

#1F187F #2B21B3 #4237DA #736BE4 #A49EED

Accessibility & contrast

On white

7.53

#4237DA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#4237DA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237DA

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237DA	#FFFFFF	#000000	##FFFFFF
##4237DA	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CDF

Deuteranopia (green-blind)

#004DD7

Tritanopia (blue-blind)

#006786

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #4237da;
/* rgb */ color: rgb(66, 55, 218);
/* oklch */ color: oklch(47.1% 0.235 275.5);

Tailwind

colors: {
  custom: {
    50: '#8c71e7',
    500: '#4237da',
    950: '#000000',
  },
}

SCSS

$custom: #4237da;
$custom-light: #8c71e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4237da",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 218
  },
  "hsl": {
    "h": 244.049,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.47068,
    "c": 0.2347,
    "h": 275.5
  },
  "luminance": 0.08953
}

Semantic roles & 50–950 ramp

primary

#4237DA

secondary

#D5D993

accent

#EC3CE0

background

#F9F6FE

surface

#F2ECFD

border

#CCC7D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #4237DA

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

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