#4237BE#4237BE

#4237BE is a dark, highly saturated blue. Relative luminance 0.076; OKLCH L 44.3% C 0.201 H 277.9°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX#4237BE
RGBrgb(66, 55, 190)
HSLhsl(245, 55%, 48%)
HSVhsv(245, 71%, 75%)
CMYKcmyk(65.3%, 71.1%, 0%, 25.5%)
CIE-LABlab(33.15, 45.12, -69.03)
CIE-LCHlch(33.15, 82.47, 303.17°)
OKLaboklab(44.3% 0.0278 -0.1993)
OKLCHoklch(44.3% 0.201 277.9)
XYZxyz(12.9042, 7.6073, 49.4935)
Luminance0.0761 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4237BE #B3BE37
analogous
#376FBE #4237BE #8537BE
triadic
#4237BE #BE4237 #37BE42
tetradic
#4237BE #BE376F #B3BE37 #37BE85
square
#4237BE #BE376F #B3BE37 #37BE85
split-complementary
#4237BE #BE8537 #6FBE37
monochromatic
#211C5F #32298F #4237BE #6A61D1 #9790DF

Accessibility & contrast

On white

8.33
#4237BE on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.52
#4237BE on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237BE
8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4237BE#FFFFFF#000000##FFFFFF
##4237BE1.008.332.528.33
#FFFFFF8.331.0021.001.00
#0000002.5221.001.0021.00
##FFFFFF8.331.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0053C2
Deuteranopia (green-blind)
#0048BB
Tritanopia (blue-blind)
#005C77
Achromatopsia (no color)
#4E4E4E

Design tokens & code

CSS
--color: #4237be;
/* rgb */ color: rgb(66, 55, 190);
/* oklch */ color: oklch(44.3% 0.201 277.9);
Tailwind
colors: {
  custom: {
    50: '#866fd3',
    500: '#4237be',
    950: '#000000',
  },
}
SCSS
$custom: #4237be;
$custom-light: #866fd3;
$custom-dark: #000000;
JSON
{
  "hex": "#4237be",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 190
  },
  "hsl": {
    "h": 244.889,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.44303,
    "c": 0.20121,
    "h": 277.9
  },
  "luminance": 0.07608
}

Semantic roles & 50–950 ramp

primary
#4237BE
secondary
#C4CA87
accent
#DE49D2
background
#F8F6FD
surface
#F0ECFA
border
#CBC7D3
text
#0D0714
muted
#7D7A83

Preview Lab

Preview with #4237BE

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

Preview Lab → · Contrast checker → · Palette generator →

#4237BE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva