#3B81C8#3B81C8

#3B81C8 is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.2% C 0.130 H 251.2°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#3B81C8
RGB	rgb(59, 129, 200)
HSL	hsl(210, 56%, 51%)
HSV	hsv(210, 71%, 78%)
CMYK	cmyk(70.5%, 35.5%, 0%, 21.6%)
CIE-LAB	lab(52.73, 1.53, -43.25)
CIE-LCH	lch(52.73, 43.27, 272.02°)
OKLab	oklab(59.21% -0.0418 -0.1229)
OKLCH	oklch(59.21% 0.13 251.2)
XYZ	xyz(20.0753, 20.7983, 57.5888)
Luminance	0.2080 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B81C8 #C8823B

analogous

#3BC7C8 #3B81C8 #3B3BC8

triadic

#3B81C8 #C83B81 #81C83B

tetradic

#3B81C8 #C83BC7 #C8823B #3BC83B

square

#3B81C8 #C83BC7 #C8823B #3BC83B

split-complementary

#3B81C8 #C83B3B #C7C83B

monochromatic

#1E446B #2B639A #3B81C8 #6BA0D5 #9BBEE3

Accessibility & contrast

On white

4.07

#3B81C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#3B81C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B81C8

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B81C8	#FFFFFF	#000000	##000000
##3B81C8	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6185CB

Deuteranopia (green-blind)

#4D78C7

Tritanopia (blue-blind)

#00929B

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3b81c8;
/* rgb */ color: rgb(59, 129, 200);
/* oklch */ color: oklch(59.2% 0.130 251.2);

Tailwind

colors: {
  custom: {
    50: '#81a5d9',
    500: '#3b81c8',
    950: '#000000',
  },
}

SCSS

$custom: #3b81c8;
$custom-light: #81a5d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3b81c8",
  "rgb": {
    "r": 59,
    "g": 129,
    "b": 200
  },
  "hsl": {
    "h": 210.213,
    "s": 56.175,
    "l": 50.784
  },
  "oklch": {
    "l": 0.59209,
    "c": 0.12979,
    "h": 251.2
  },
  "luminance": 0.208
}

Semantic roles & 50–950 ramp

primary

#3B81C8

secondary

#CFB090

accent

#9448DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C0F14

muted

#7D7F83

Preview Lab

Preview with #3B81C8

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

Preview Lab → · Contrast checker → · Palette generator →