#3F7CB5#3F7CB5

#3F7CB5 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.2% C 0.109 H 248.9°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CB5
RGB	rgb(63, 124, 181)
HSL	hsl(209, 48%, 48%)
HSV	hsv(209, 65%, 71%)
CMYK	cmyk(65.2%, 31.5%, 0%, 29%)
CIE-LAB	lab(50.46, -1.50, -35.93)
CIE-LCH	lch(50.46, 35.96, 267.60°)
OKLab	oklab(57.16% -0.0393 -0.1015)
OKLCH	oklch(57.16% 0.109 248.9)
XYZ	xyz(17.5950, 18.8065, 46.4099)
Luminance	0.1881 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CB5 #B5783F

analogous

#3FB5B3 #3F7CB5 #3F41B5

triadic

#3F7CB5 #B53F7C #7CB53F

tetradic

#3F7CB5 #B33FB5 #B5783F #41B53F

square

#3F7CB5 #B33FB5 #B5783F #41B53F

split-complementary

#3F7CB5 #B53F41 #B5B33F

monochromatic

#1F3E5A #2F5D88 #3F7CB5 #679ACA #94B8DA

Accessibility & contrast

On white

4.41

#3F7CB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#3F7CB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CB5

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CB5	#FFFFFF	#000000	##000000
##3F7CB5	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637EB7

Deuteranopia (green-blind)

#5373B4

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7cb5;
/* rgb */ color: rgb(63, 124, 181);
/* oklch */ color: oklch(57.2% 0.109 248.9);

Tailwind

colors: {
  custom: {
    50: '#80a1cb',
    500: '#3f7cb5',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cb5;
$custom-light: #80a1cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cb5",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 181
  },
  "hsl": {
    "h": 208.983,
    "s": 48.361,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57159,
    "c": 0.10888,
    "h": 248.9
  },
  "luminance": 0.18808
}

Semantic roles & 50–950 ramp

primary

#3F7CB5

secondary

#C5A78A

accent

#9250D8

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F7CB5

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

Preview Lab → · Contrast checker → · Palette generator →