#4083EF#4083EF

#4083EF is a light, vivid blue. Relative luminance 0.236; OKLCH L 62.2% C 0.176 H 259.6°. Best body text is #000000 at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#4083EF
RGB	rgb(64, 131, 239)
HSL	hsl(217, 85%, 59%)
HSV	hsv(217, 73%, 94%)
CMYK	cmyk(73.2%, 45.2%, 0%, 6.3%)
CIE-LAB	lab(55.64, 14.99, -60.52)
CIE-LCH	lch(55.64, 62.35, 283.91°)
OKLab	oklab(62.22% -0.0319 -0.1735)
OKLCH	oklch(62.22% 0.176 259.6)
XYZ	xyz(25.8050, 23.5517, 84.8306)
Luminance	0.2356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4083EF #EFAC40

analogous

#40DAEF #4083EF #5540EF

triadic

#4083EF #EF4083 #83EF40

tetradic

#4083EF #EF40DA #EFAC40 #40EF55

square

#4083EF #EF40DA #EFAC40 #40EF55

split-complementary

#4083EF #EF5540 #DAEF40

monochromatic

#0E48A7 #1361DF #4083EF #78A8F4 #B1CCF8

Accessibility & contrast

On white

3.68

#4083EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.71

#4083EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4083EF

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4083EF	#FFFFFF	#000000	##000000
##4083EF	1.00	3.68	5.71	5.71
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.71	21.00	1.00	1.00
##000000	5.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B8EF3

Deuteranopia (green-blind)

#247EED

Tritanopia (blue-blind)

#009CAD

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #4083ef;
/* rgb */ color: rgb(64, 131, 239);
/* oklch */ color: oklch(62.2% 0.176 259.6);

Tailwind

colors: {
  custom: {
    50: '#8aa6f5',
    500: '#4083ef',
    950: '#000000',
  },
}

SCSS

$custom: #4083ef;
$custom-light: #8aa6f5;
$custom-dark: #000000;

JSON

{
  "hex": "#4083ef",
  "rgb": {
    "r": 64,
    "g": 131,
    "b": 239
  },
  "hsl": {
    "h": 217.029,
    "s": 84.541,
    "l": 59.412
  },
  "oklch": {
    "l": 0.62221,
    "c": 0.1764,
    "h": 259.6
  },
  "luminance": 0.23555
}

Semantic roles & 50–950 ramp

primary

#4083EF

secondary

#E7CDA3

accent

#AC2DFB

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0D0F17

muted

#7E7F85

Preview Lab

Preview with #4083EF

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

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