#3999DA#3999DA

#3999DA is a light, vivid cyan. Relative luminance 0.287; OKLCH L 65.6% C 0.131 H 242.5°. Best body text is #000000 at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#3999DA
RGB	rgb(57, 153, 218)
HSL	hsl(204, 69%, 54%)
HSV	hsv(204, 74%, 85%)
CMYK	cmyk(73.9%, 29.8%, 0%, 14.5%)
CIE-LAB	lab(60.53, -6.41, -41.08)
CIE-LCH	lch(60.53, 41.58, 261.13°)
OKLab	oklab(65.62% -0.0605 -0.1163)
OKLCH	oklch(65.62% 0.131 242.5)
XYZ	xyz(25.7286, 28.7113, 70.5019)
Luminance	0.2871 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3999DA #DA7A39

analogous

#39DACB #3999DA #3949DA

triadic

#3999DA #DA3999 #99DA39

tetradic

#3999DA #CB39DA #DA7A39 #49DA39

square

#3999DA #CB39DA #DA7A39 #49DA39

split-complementary

#3999DA #DA3949 #DACB39

monochromatic

#185681 #2279B4 #3999DA #6DB4E4 #A0CEED

Accessibility & contrast

On white

3.11

#3999DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.74

#3999DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3999DA

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3999DA	#FFFFFF	#000000	##000000
##3999DA	1.00	3.11	6.74	6.74
#FFFFFF	3.11	1.00	21.00	21.00
#000000	6.74	21.00	1.00	1.00
##000000	6.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B9ADD

Deuteranopia (green-blind)

#658BD9

Tritanopia (blue-blind)

#00A9B0

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #3999da;
/* rgb */ color: rgb(57, 153, 218);
/* oklch */ color: oklch(65.6% 0.131 242.5);

Tailwind

colors: {
  custom: {
    50: '#84b6e5',
    500: '#3999da',
    950: '#000000',
  },
}

SCSS

$custom: #3999da;
$custom-light: #84b6e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3999da",
  "rgb": {
    "r": 57,
    "g": 153,
    "b": 218
  },
  "hsl": {
    "h": 204.224,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.65621,
    "c": 0.1311,
    "h": 242.5
  },
  "luminance": 0.28714
}

Semantic roles & 50–950 ramp

primary

#3999DA

secondary

#DAB195

accent

#833CEB

background

#F8FBFE

surface

#F0F6FC

border

#CBD0D5

text

#0C1116

muted

#7D8084

Preview Lab

Preview with #3999DA

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

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