#3999BC#3999BC

#3999BC is a light, moderate cyan. Relative luminance 0.273; OKLCH L 64.2% C 0.102 H 226.1°. Best body text is #000000 at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#3999BC
RGB	rgb(57, 153, 188)
HSL	hsl(196, 53%, 48%)
HSV	hsv(196, 70%, 74%)
CMYK	cmyk(69.7%, 18.6%, 0%, 26.3%)
CIE-LAB	lab(59.23, -16.58, -26.28)
CIE-LCH	lch(59.23, 31.08, 237.75°)
OKLab	oklab(64.17% -0.0707 -0.0735)
OKLCH	oklch(64.17% 0.102 226.1)
XYZ	xyz(22.1520, 27.2807, 51.6654)
Luminance	0.2728 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3999BC #BC5C39

analogous

#39BC9E #3999BC #3957BC

triadic

#3999BC #BC3999 #99BC39

tetradic

#3999BC #9E39BC #BC5C39 #57BC39

square

#3999BC #9E39BC #BC5C39 #57BC39

split-complementary

#3999BC #BC3957 #BC9E39

monochromatic

#1D4D5E #2B738D #3999BC #63B2D0 #92C9DE

Accessibility & contrast

On white

3.25

#3999BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.46

#3999BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3999BC

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3999BC	#FFFFFF	#000000	##000000
##3999BC	1.00	3.25	6.46	6.46
#FFFFFF	3.25	1.00	21.00	21.00
#000000	6.46	21.00	1.00	1.00
##000000	6.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8696BE

Deuteranopia (green-blind)

#7489BC

Tritanopia (blue-blind)

#00A3A4

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #3999bc;
/* rgb */ color: rgb(57, 153, 188);
/* oklch */ color: oklch(64.2% 0.102 226.1);

Tailwind

colors: {
  custom: {
    50: '#80b7d0',
    500: '#3999bc',
    950: '#000000',
  },
}

SCSS

$custom: #3999bc;
$custom-light: #80b7d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3999bc",
  "rgb": {
    "r": 57,
    "g": 153,
    "b": 188
  },
  "hsl": {
    "h": 196.031,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.64167,
    "c": 0.10205,
    "h": 226.1
  },
  "luminance": 0.27283
}

Semantic roles & 50–950 ramp

primary

#3999BC

secondary

#C99988

accent

#724BDD

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #3999BC

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

Preview Lab → · Contrast checker → · Palette generator →