#3F7DBA#3F7DBA

#3F7DBA is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.7% C 0.114 H 250.1°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F7DBA
RGB	rgb(63, 125, 186)
HSL	hsl(210, 49%, 49%)
HSV	hsv(210, 66%, 73%)
CMYK	cmyk(66.1%, 32.8%, 0%, 27.1%)
CIE-LAB	lab(51.00, -0.37, -37.96)
CIE-LCH	lch(51.00, 37.96, 269.45°)
OKLab	oklab(57.66% -0.0389 -0.1074)
OKLCH	oklch(57.66% 0.114 250.1)
XYZ	xyz(18.2432, 19.2673, 49.2024)
Luminance	0.1927 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7DBA #BA7C3F

analogous

#3FBABA #3F7DBA #3F40BA

triadic

#3F7DBA #BA3F7D #7DBA3F

tetradic

#3F7DBA #BA3FBA #BA7C3F #40BA3F

square

#3F7DBA #BA3FBA #BA7C3F #40BA3F

split-complementary

#3F7DBA #BA3F40 #BABA3F

monochromatic

#20405F #305E8C #3F7DBA #6A9CCC #97BADC

Accessibility & contrast

On white

4.33

#3F7DBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#3F7DBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DBA

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7DBA	#FFFFFF	#000000	##000000
##3F7DBA	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6280BD

Deuteranopia (green-blind)

#5174B9

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7dba;
/* rgb */ color: rgb(63, 125, 186);
/* oklch */ color: oklch(57.7% 0.114 250.1);

Tailwind

colors: {
  custom: {
    50: '#81a2cf',
    500: '#3f7dba',
    950: '#000000',
  },
}

SCSS

$custom: #3f7dba;
$custom-light: #81a2cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7dba",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 186
  },
  "hsl": {
    "h": 209.756,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.57662,
    "c": 0.11426,
    "h": 250.1
  },
  "luminance": 0.19269
}

Semantic roles & 50–950 ramp

primary

#3F7DBA

secondary

#C8AA8D

accent

#934FD9

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F14

muted

#7C7E82

Preview Lab

Preview with #3F7DBA

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

Preview Lab → · Contrast checker → · Palette generator →