#3F7DB5#3F7DB5

#3F7DB5 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.4% C 0.108 H 248.1°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F7DB5
RGB	rgb(63, 125, 181)
HSL	hsl(208, 48%, 48%)
HSV	hsv(208, 65%, 71%)
CMYK	cmyk(65.2%, 30.9%, 0%, 29%)
CIE-LAB	lab(50.76, -2.10, -35.46)
CIE-LCH	lch(50.76, 35.53, 266.61°)
OKLab	oklab(57.39% -0.0403 -0.1002)
OKLCH	oklch(57.39% 0.108 248.1)
XYZ	xyz(17.7209, 19.0584, 46.4518)
Luminance	0.1906 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7DB5 #B5773F

analogous

#3FB5B2 #3F7DB5 #3F42B5

triadic

#3F7DB5 #B53F7D #7DB53F

tetradic

#3F7DB5 #B23FB5 #B5773F #42B53F

square

#3F7DB5 #B23FB5 #B5773F #42B53F

split-complementary

#3F7DB5 #B53F42 #B5B23F

monochromatic

#1F3E5A #2F5E88 #3F7DB5 #679BCA #94B9DA

Accessibility & contrast

On white

4.36

#3F7DB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#3F7DB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DB5

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7DB5	#FFFFFF	#000000	##000000
##3F7DB5	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647FB7

Deuteranopia (green-blind)

#5474B4

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7db5;
/* rgb */ color: rgb(63, 125, 181);
/* oklch */ color: oklch(57.4% 0.108 248.1);

Tailwind

colors: {
  custom: {
    50: '#80a2cb',
    500: '#3f7db5',
    950: '#000000',
  },
}

SCSS

$custom: #3f7db5;
$custom-light: #80a2cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7db5",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 181
  },
  "hsl": {
    "h": 208.475,
    "s": 48.361,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57391,
    "c": 0.108,
    "h": 248.1
  },
  "luminance": 0.1906
}

Semantic roles & 50–950 ramp

primary

#3F7DB5

secondary

#C5A68A

accent

#9050D8

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #3F7DB5

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

Preview Lab → · Contrast checker → · Palette generator →