#3987F3#3987F3

#3987F3 is a light, vivid cyan. Relative luminance 0.247; OKLCH L 63.1% C 0.179 H 257.5°. Best body text is #000000 at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#3987F3
RGB	rgb(57, 135, 243)
HSL	hsl(215, 89%, 59%)
HSV	hsv(215, 77%, 95%)
CMYK	cmyk(76.5%, 44.4%, 0%, 4.7%)
CIE-LAB	lab(56.75, 13.17, -60.97)
CIE-LCH	lch(56.75, 62.37, 282.19°)
OKLab	oklab(63.09% -0.0388 -0.1748)
OKLCH	oklch(63.09% 0.179 257.5)
XYZ	xyz(26.5230, 24.6658, 88.1397)
Luminance	0.2467 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3987F3 #F3A539

analogous

#39E4F3 #3987F3 #4839F3

triadic

#3987F3 #F33987 #87F339

tetradic

#3987F3 #F339E4 #F3A539 #39F348

square

#3987F3 #F339E4 #F3A539 #39F348

split-complementary

#3987F3 #F34839 #E4F339

monochromatic

#0A4CA7 #0E66E1 #3987F3 #73AAF6 #ACCDFA

Accessibility & contrast

On white

3.54

#3987F3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.93

#3987F3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3987F3

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3987F3	#FFFFFF	#000000	##000000
##3987F3	1.00	3.54	5.93	5.93
#FFFFFF	3.54	1.00	21.00	21.00
#000000	5.93	21.00	1.00	1.00
##000000	5.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F91F7

Deuteranopia (green-blind)

#2680F1

Tritanopia (blue-blind)

#00A1B1

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #3987f3;
/* rgb */ color: rgb(57, 135, 243);
/* oklch */ color: oklch(63.1% 0.179 257.5);

Tailwind

colors: {
  custom: {
    50: '#89a9f8',
    500: '#3987f3',
    950: '#000000',
  },
}

SCSS

$custom: #3987f3;
$custom-light: #89a9f8;
$custom-dark: #000000;

JSON

{
  "hex": "#3987f3",
  "rgb": {
    "r": 57,
    "g": 135,
    "b": 243
  },
  "hsl": {
    "h": 214.839,
    "s": 88.571,
    "l": 58.824
  },
  "oklch": {
    "l": 0.63094,
    "c": 0.17908,
    "h": 257.5
  },
  "luminance": 0.24669
}

Semantic roles & 50–950 ramp

primary

#3987F3

secondary

#E9CA9F

accent

#A529FF

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0D0F17

muted

#7E7F85

Preview Lab

Preview with #3987F3

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

Preview Lab → · Contrast checker → · Palette generator →