#3F7CB4#3F7CB4

#3F7CB4 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.108 H 248.4°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CB4
RGB	rgb(63, 124, 180)
HSL	hsl(209, 48%, 48%)
HSV	hsv(209, 65%, 71%)
CMYK	cmyk(65%, 31.1%, 0%, 29.4%)
CIE-LAB	lab(50.41, -1.85, -35.43)
CIE-LCH	lch(50.41, 35.48, 267.01°)
OKLab	oklab(57.11% -0.0396 -0.1001)
OKLCH	oklch(57.11% 0.108 248.4)
XYZ	xyz(17.4927, 18.7656, 45.8714)
Luminance	0.1877 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CB4 #B4773F

analogous

#3FB4B1 #3F7CB4 #3F41B4

triadic

#3F7CB4 #B43F7C #7CB43F

tetradic

#3F7CB4 #B13FB4 #B4773F #41B43F

square

#3F7CB4 #B13FB4 #B4773F #41B43F

split-complementary

#3F7CB4 #B43F41 #B4B13F

monochromatic

#1F3E59 #2F5D87 #3F7CB4 #679ACA #94B8DA

Accessibility & contrast

On white

4.42

#3F7CB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#3F7CB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CB4

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CB4	#FFFFFF	#000000	##000000
##3F7CB4	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647EB6

Deuteranopia (green-blind)

#5473B3

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7cb4;
/* rgb */ color: rgb(63, 124, 180);
/* oklch */ color: oklch(57.1% 0.108 248.4);

Tailwind

colors: {
  custom: {
    50: '#80a1ca',
    500: '#3f7cb4',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cb4;
$custom-light: #80a1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cb4",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 180
  },
  "hsl": {
    "h": 208.718,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57105,
    "c": 0.10763,
    "h": 248.4
  },
  "luminance": 0.18767
}

Semantic roles & 50–950 ramp

primary

#3F7CB4

secondary

#C5A68A

accent

#9150D8

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #3F7CB4

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

Preview Lab → · Contrast checker → · Palette generator →