#3F7CA5#3F7CA5

#3F7CA5 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.3% C 0.090 H 240.4°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CA5
RGB	rgb(63, 124, 165)
HSL	hsl(204, 45%, 45%)
HSV	hsv(204, 62%, 65%)
CMYK	cmyk(61.8%, 24.8%, 0%, 35.3%)
CIE-LAB	lab(49.72, -6.94, -27.81)
CIE-LCH	lch(49.72, 28.66, 255.99°)
OKLab	oklab(56.33% -0.0444 -0.078)
OKLCH	oklch(56.33% 0.09 240.4)
XYZ	xyz(16.0465, 18.1871, 38.2548)
Luminance	0.1819 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CA5 #A5683F

analogous

#3FA59B #3F7CA5 #3F49A5

triadic

#3F7CA5 #A53F7C #7CA53F

tetradic

#3F7CA5 #9B3FA5 #A5683F #49A53F

square

#3F7CA5 #9B3FA5 #A5683F #49A53F

split-complementary

#3F7CA5 #A53F49 #A59B3F

monochromatic

#1D394C #2E5B79 #3F7CA5 #5F9AC2 #8CB6D3

Accessibility & contrast

On white

4.53

#3F7CA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#3F7CA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CA5

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CA5	#FFFFFF	#000000	##000000
##3F7CA5	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#697CA7

Deuteranopia (green-blind)

#5C72A4

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3f7ca5;
/* rgb */ color: rgb(63, 124, 165);
/* oklch */ color: oklch(56.3% 0.090 240.4);

Tailwind

colors: {
  custom: {
    50: '#7ea1c0',
    500: '#3f7ca5',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ca5;
$custom-light: #7ea1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ca5",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 165
  },
  "hsl": {
    "h": 204.118,
    "s": 44.737,
    "l": 44.706
  },
  "oklch": {
    "l": 0.56334,
    "c": 0.08979,
    "h": 240.4
  },
  "luminance": 0.18189
}

Semantic roles & 50–950 ramp

primary

#3F7CA5

secondary

#BE9A82

accent

#8753D4

background

#F8F9FB

surface

#EFF2F7

border

#CACCD0

text

#0B0F12

muted

#7C7E81

Preview Lab

Preview with #3F7CA5

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

Preview Lab → · Contrast checker → · Palette generator →