#3981B1#3981B1

#3981B1 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.9% C 0.103 H 241.0°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#3981B1
RGB	rgb(57, 129, 177)
HSL	hsl(204, 51%, 46%)
HSV	hsv(204, 68%, 69%)
CMYK	cmyk(67.8%, 27.1%, 0%, 30.6%)
CIE-LAB	lab(51.55, -6.86, -31.94)
CIE-LCH	lch(51.55, 32.67, 257.89°)
OKLab	oklab(57.89% -0.0499 -0.09)
OKLCH	oklch(57.89% 0.103 241)
XYZ	xyz(17.4704, 19.7428, 44.4765)
Luminance	0.1974 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3981B1 #B16939

analogous

#39B1A5 #3981B1 #3945B1

triadic

#3981B1 #B13981 #81B139

tetradic

#3981B1 #A539B1 #B16939 #45B139

square

#3981B1 #A539B1 #B16939 #45B139

split-complementary

#3981B1 #B13945 #B1A539

monochromatic

#1B3E54 #2A5F83 #3981B1 #5D9FCB #8BBADA

Accessibility & contrast

On white

4.24

#3981B1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#3981B1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3981B1

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3981B1	#FFFFFF	#000000	##000000
##3981B1	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B81B3

Deuteranopia (green-blind)

#5B76B0

Tritanopia (blue-blind)

#008D92

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3981b1;
/* rgb */ color: rgb(57, 129, 177);
/* oklch */ color: oklch(57.9% 0.103 241.0);

Tailwind

colors: {
  custom: {
    50: '#7da5c8',
    500: '#3981b1',
    950: '#000000',
  },
}

SCSS

$custom: #3981b1;
$custom-light: #7da5c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3981b1",
  "rgb": {
    "r": 57,
    "g": 129,
    "b": 177
  },
  "hsl": {
    "h": 204,
    "s": 51.282,
    "l": 45.882
  },
  "oklch": {
    "l": 0.57893,
    "c": 0.1029,
    "h": 241
  },
  "luminance": 0.19745
}

Semantic roles & 50–950 ramp

primary

#3981B1

secondary

#C49C82

accent

#864DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3981B1

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

Preview Lab → · Contrast checker → · Palette generator →