#3991DA#3991DA

#3991DA is a light, vivid cyan. Relative luminance 0.262; OKLCH L 63.8% C 0.138 H 247.3°. Best body text is #000000 at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#3991DA
RGB	rgb(57, 145, 218)
HSL	hsl(207, 69%, 54%)
HSV	hsv(207, 74%, 85%)
CMYK	cmyk(73.9%, 33.5%, 0%, 14.5%)
CIE-LAB	lab(58.21, -1.81, -44.74)
CIE-LCH	lch(58.21, 44.77, 267.68°)
OKLab	oklab(63.79% -0.0531 -0.127)
OKLCH	oklch(63.79% 0.138 247.3)
XYZ	xyz(24.4628, 26.1798, 70.0800)
Luminance	0.2618 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3991DA #DA8239

analogous

#39DAD3 #3991DA #3941DA

triadic

#3991DA #DA3991 #91DA39

tetradic

#3991DA #D339DA #DA8239 #41DA39

square

#3991DA #D339DA #DA8239 #41DA39

split-complementary

#3991DA #DA3941 #DAD339

monochromatic

#185181 #2272B4 #3991DA #6DAEE4 #A0CAED

Accessibility & contrast

On white

3.37

#3991DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.24

#3991DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3991DA

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3991DA	#FFFFFF	#000000	##000000
##3991DA	1.00	3.37	6.24	6.24
#FFFFFF	3.37	1.00	21.00	21.00
#000000	6.24	21.00	1.00	1.00
##000000	6.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7094DD

Deuteranopia (green-blind)

#5985D9

Tritanopia (blue-blind)

#00A3AB

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #3991da;
/* rgb */ color: rgb(57, 145, 218);
/* oklch */ color: oklch(63.8% 0.138 247.3);

Tailwind

colors: {
  custom: {
    50: '#84b0e6',
    500: '#3991da',
    950: '#000000',
  },
}

SCSS

$custom: #3991da;
$custom-light: #84b0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3991da",
  "rgb": {
    "r": 57,
    "g": 145,
    "b": 218
  },
  "hsl": {
    "h": 207.205,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.63792,
    "c": 0.1377,
    "h": 247.3
  },
  "luminance": 0.26183
}

Semantic roles & 50–950 ramp

primary

#3991DA

secondary

#DAB495

accent

#8C3CEB

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0C1016

muted

#7D7F84

Preview Lab

Preview with #3991DA

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

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