#4183EA#4183EA

#4183EA is a mid, vivid blue. Relative luminance 0.233; OKLCH L 61.9% C 0.170 H 259.1°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#4183EA
RGB	rgb(65, 131, 234)
HSL	hsl(217, 80%, 59%)
HSV	hsv(217, 72%, 92%)
CMYK	cmyk(72.2%, 44%, 0%, 8.2%)
CIE-LAB	lab(55.37, 13.32, -58.16)
CIE-LCH	lch(55.37, 59.66, 282.90°)
OKLab	oklab(61.93% -0.0321 -0.1665)
OKLCH	oklch(61.93% 0.17 259.1)
XYZ	xyz(25.1422, 23.2942, 80.9971)
Luminance	0.2330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4183EA #EAA841

analogous

#41D7EA #4183EA #5341EA

triadic

#4183EA #EA4183 #83EA41

tetradic

#4183EA #EA41D7 #EAA841 #41EA53

square

#4183EA #EA41D7 #EAA841 #41EA53

split-complementary

#4183EA #EA5341 #D7EA41

monochromatic

#12499F #1862D6 #4183EA #78A7F0 #AFCBF6

Accessibility & contrast

On white

3.71

#4183EA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#4183EA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4183EA

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4183EA	#FFFFFF	#000000	##000000
##4183EA	1.00	3.71	5.66	5.66
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.66	21.00	1.00	1.00
##000000	5.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F8DEE

Deuteranopia (green-blind)

#2E7DE8

Tritanopia (blue-blind)

#009BAB

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #4183ea;
/* rgb */ color: rgb(65, 131, 234);
/* oklch */ color: oklch(61.9% 0.170 259.1);

Tailwind

colors: {
  custom: {
    50: '#8aa6f1',
    500: '#4183ea',
    950: '#000000',
  },
}

SCSS

$custom: #4183ea;
$custom-light: #8aa6f1;
$custom-dark: #000000;

JSON

{
  "hex": "#4183ea",
  "rgb": {
    "r": 65,
    "g": 131,
    "b": 234
  },
  "hsl": {
    "h": 216.568,
    "s": 80.095,
    "l": 58.627
  },
  "oklch": {
    "l": 0.61933,
    "c": 0.1696,
    "h": 259.1
  },
  "luminance": 0.23297
}

Semantic roles & 50–950 ramp

primary

#4183EA

secondary

#E5CBA2

accent

#A931F7

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D0F17

muted

#7E7F85

Preview Lab

Preview with #4183EA

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

Preview Lab → · Contrast checker → · Palette generator →