#3B81CA#3B81CA

#3B81CA is a mid, vivid cyan. Relative luminance 0.209; OKLCH L 59.3% C 0.132 H 251.8°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#3B81CA
RGB	rgb(59, 129, 202)
HSL	hsl(211, 57%, 51%)
HSV	hsv(211, 71%, 79%)
CMYK	cmyk(70.8%, 36.1%, 0%, 20.8%)
CIE-LAB	lab(52.83, 2.24, -44.22)
CIE-LCH	lch(52.83, 44.28, 272.90°)
OKLab	oklab(59.32% -0.0413 -0.1257)
OKLCH	oklch(59.32% 0.132 251.8)
XYZ	xyz(20.3106, 20.8924, 58.8279)
Luminance	0.2089 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B81CA #CA843B

analogous

#3BC9CA #3B81CA #3C3BCA

triadic

#3B81CA #CA3B81 #81CA3B

tetradic

#3B81CA #CA3BC9 #CA843B #3BCA3C

square

#3B81CA #CA3BC9 #CA843B #3BCA3C

split-complementary

#3B81CA #CA3C3B #C9CA3B

monochromatic

#1E446D #2B639D #3B81CA #6BA0D7 #9BBFE4

Accessibility & contrast

On white

4.05

#3B81CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#3B81CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B81CA

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B81CA	#FFFFFF	#000000	##000000
##3B81CA	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6085CD

Deuteranopia (green-blind)

#4B78C9

Tritanopia (blue-blind)

#00929C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3b81ca;
/* rgb */ color: rgb(59, 129, 202);
/* oklch */ color: oklch(59.3% 0.132 251.8);

Tailwind

colors: {
  custom: {
    50: '#82a5da',
    500: '#3b81ca',
    950: '#000000',
  },
}

SCSS

$custom: #3b81ca;
$custom-light: #82a5da;
$custom-dark: #000000;

JSON

{
  "hex": "#3b81ca",
  "rgb": {
    "r": 59,
    "g": 129,
    "b": 202
  },
  "hsl": {
    "h": 210.629,
    "s": 57.43,
    "l": 51.176
  },
  "oklch": {
    "l": 0.59324,
    "c": 0.13233,
    "h": 251.8
  },
  "luminance": 0.20895
}

Semantic roles & 50–950 ramp

primary

#3B81CA

secondary

#D0B191

accent

#9647E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3B81CA

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

Preview Lab → · Contrast checker → · Palette generator →