#3991CA#3991CA

#3991CA is a light, moderate cyan. Relative luminance 0.254; OKLCH L 62.9% C 0.119 H 241.0°. Best body text is #000000 at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#3991CA
RGB	rgb(57, 145, 202)
HSL	hsl(204, 58%, 51%)
HSV	hsv(204, 72%, 79%)
CMYK	cmyk(71.8%, 28.2%, 0%, 20.8%)
CIE-LAB	lab(57.45, -7.42, -36.95)
CIE-LCH	lch(57.45, 37.69, 258.65°)
OKLab	oklab(62.94% -0.0579 -0.1044)
OKLCH	oklch(62.94% 0.119 241)
XYZ	xyz(22.4693, 25.3824, 59.5808)
Luminance	0.2539 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3991CA #CA7239

analogous

#39CABA #3991CA #3948CA

triadic

#3991CA #CA3991 #91CA39

tetradic

#3991CA #BA39CA #CA7239 #48CA39

square

#3991CA #BA39CA #CA7239 #48CA39

split-complementary

#3991CA #CA3948 #CABA39

monochromatic

#1D4D6C #2A6F9C #3991CA #69ACD7 #9AC7E4

Accessibility & contrast

On white

3.46

#3991CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.08

#3991CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3991CA

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3991CA	#FFFFFF	#000000	##000000
##3991CA	1.00	3.46	6.08	6.08
#FFFFFF	3.46	1.00	21.00	21.00
#000000	6.08	21.00	1.00	1.00
##000000	6.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7792CD

Deuteranopia (green-blind)

#6384C9

Tritanopia (blue-blind)

#009FA5

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #3991ca;
/* rgb */ color: rgb(57, 145, 202);
/* oklch */ color: oklch(62.9% 0.119 241.0);

Tailwind

colors: {
  custom: {
    50: '#81b1da',
    500: '#3991ca',
    950: '#000000',
  },
}

SCSS

$custom: #3991ca;
$custom-light: #81b1da;
$custom-dark: #000000;

JSON

{
  "hex": "#3991ca",
  "rgb": {
    "r": 57,
    "g": 145,
    "b": 202
  },
  "hsl": {
    "h": 203.586,
    "s": 57.769,
    "l": 50.784
  },
  "oklch": {
    "l": 0.62941,
    "c": 0.11936,
    "h": 241
  },
  "luminance": 0.25385
}

Semantic roles & 50–950 ramp

primary

#3991CA

secondary

#D0A98F

accent

#8347E1

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3991CA

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

Preview Lab → · Contrast checker → · Palette generator →