#3981B4#3981B4

#3981B4 is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.0% C 0.106 H 242.6°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3981B4
RGB	rgb(57, 129, 180)
HSL	hsl(205, 52%, 46%)
HSV	hsv(205, 68%, 71%)
CMYK	cmyk(68.3%, 28.3%, 0%, 29.4%)
CIE-LAB	lab(51.68, -5.82, -33.45)
CIE-LCH	lch(51.68, 33.95, 260.13°)
OKLab	oklab(58.05% -0.0489 -0.0944)
OKLCH	oklch(58.05% 0.106 242.6)
XYZ	xyz(17.7727, 19.8638, 46.0686)
Luminance	0.1987 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3981B4 #B46C39

analogous

#39B4AA #3981B4 #3944B4

triadic

#3981B4 #B43981 #81B439

tetradic

#3981B4 #AA39B4 #B46C39 #44B439

square

#3981B4 #AA39B4 #B46C39 #44B439

split-complementary

#3981B4 #B43944 #B4AA39

monochromatic

#1C3E57 #2A6086 #3981B4 #5E9ECC #8DBADB

Accessibility & contrast

On white

4.22

#3981B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#3981B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3981B4

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3981B4	#FFFFFF	#000000	##000000
##3981B4	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A82B6

Deuteranopia (green-blind)

#5976B3

Tritanopia (blue-blind)

#008E93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3981b4;
/* rgb */ color: rgb(57, 129, 180);
/* oklch */ color: oklch(58.0% 0.106 242.6);

Tailwind

colors: {
  custom: {
    50: '#7da5ca',
    500: '#3981b4',
    950: '#000000',
  },
}

SCSS

$custom: #3981b4;
$custom-light: #7da5ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3981b4",
  "rgb": {
    "r": 57,
    "g": 129,
    "b": 180
  },
  "hsl": {
    "h": 204.878,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.58047,
    "c": 0.1063,
    "h": 242.6
  },
  "luminance": 0.19866
}

Semantic roles & 50–950 ramp

primary

#3981B4

secondary

#C59F83

accent

#884CDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3981B4

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

Preview Lab → · Contrast checker → · Palette generator →