#3F7DB2#3F7DB2

#3F7DB2 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.2% C 0.104 H 246.7°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#3F7DB2
RGB	rgb(63, 125, 178)
HSL	hsl(208, 48%, 47%)
HSV	hsv(208, 65%, 70%)
CMYK	cmyk(64.6%, 29.8%, 0%, 30.2%)
CIE-LAB	lab(50.61, -3.13, -33.96)
CIE-LCH	lch(50.61, 34.10, 264.73°)
OKLab	oklab(57.23% -0.0412 -0.0958)
OKLCH	oklch(57.23% 0.104 246.7)
XYZ	xyz(17.4164, 18.9366, 44.8481)
Luminance	0.1894 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7DB2 #B2743F

analogous

#3FB2AE #3F7DB2 #3F44B2

triadic

#3F7DB2 #B23F7D #7DB23F

tetradic

#3F7DB2 #AE3FB2 #B2743F #44B23F

square

#3F7DB2 #AE3FB2 #B2743F #44B23F

split-complementary

#3F7DB2 #B23F44 #B2AE3F

monochromatic

#1F3E58 #2F5D85 #3F7DB2 #669BC9 #93B8D9

Accessibility & contrast

On white

4.39

#3F7DB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#3F7DB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DB2

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7DB2	#FFFFFF	#000000	##000000
##3F7DB2	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667FB4

Deuteranopia (green-blind)

#5673B1

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7db2;
/* rgb */ color: rgb(63, 125, 178);
/* oklch */ color: oklch(57.2% 0.104 246.7);

Tailwind

colors: {
  custom: {
    50: '#7fa2c9',
    500: '#3f7db2',
    950: '#000000',
  },
}

SCSS

$custom: #3f7db2;
$custom-light: #7fa2c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7db2",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 178
  },
  "hsl": {
    "h": 207.652,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.57232,
    "c": 0.10431,
    "h": 246.7
  },
  "luminance": 0.18938
}

Semantic roles & 50–950 ramp

primary

#3F7DB2

secondary

#C4A489

accent

#8F50D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #3F7DB2

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

Preview Lab → · Contrast checker → · Palette generator →