#3F7DA3#3F7DA3

#3F7DA3 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.5% C 0.087 H 237.9°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F7DA3
RGB	rgb(63, 125, 163)
HSL	hsl(203, 44%, 44%)
HSV	hsv(203, 61%, 64%)
CMYK	cmyk(61.3%, 23.3%, 0%, 36.1%)
CIE-LAB	lab(49.94, -8.19, -26.31)
CIE-LCH	lch(49.94, 27.56, 252.72°)
OKLab	oklab(56.48% -0.0462 -0.0737)
OKLCH	oklch(56.48% 0.087 237.9)
XYZ	xyz(15.9919, 18.3668, 37.3456)
Luminance	0.1837 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7DA3 #A3653F

analogous

#3FA397 #3F7DA3 #3F4BA3

triadic

#3F7DA3 #A33F7D #7DA33F

tetradic

#3F7DA3 #973FA3 #A3653F #4BA33F

square

#3F7DA3 #973FA3 #A3653F #4BA33F

split-complementary

#3F7DA3 #A33F4B #A3973F

monochromatic

#1D394B #2E5B77 #3F7DA3 #5E9BC1 #8AB7D2

Accessibility & contrast

On white

4.49

#3F7DA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.67

#3F7DA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DA3

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7DA3	#FFFFFF	#000000	##000000
##3F7DA3	1.00	4.49	4.67	4.67
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7CA5

Deuteranopia (green-blind)

#5E72A2

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f7da3;
/* rgb */ color: rgb(63, 125, 163);
/* oklch */ color: oklch(56.5% 0.087 237.9);

Tailwind

colors: {
  custom: {
    50: '#7da2be',
    500: '#3f7da3',
    950: '#000000',
  },
}

SCSS

$custom: #3f7da3;
$custom-light: #7da2be;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7da3",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 163
  },
  "hsl": {
    "h": 202.8,
    "s": 44.248,
    "l": 44.314
  },
  "oklch": {
    "l": 0.56476,
    "c": 0.08702,
    "h": 237.9
  },
  "luminance": 0.18368
}

Semantic roles & 50–950 ramp

primary

#3F7DA3

secondary

#BD9881

accent

#8554D4

background

#F8F9FB

surface

#EFF2F6

border

#CACCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #3F7DA3

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

Preview Lab → · Contrast checker → · Palette generator →