#3F7BB4#3F7BB4

#3F7BB4 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.9% C 0.109 H 249.2°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BB4
RGB	rgb(63, 123, 180)
HSL	hsl(209, 48%, 48%)
HSV	hsv(209, 65%, 71%)
CMYK	cmyk(65%, 31.7%, 0%, 29.4%)
CIE-LAB	lab(50.12, -1.25, -35.89)
CIE-LCH	lch(50.12, 35.91, 268.00°)
OKLab	oklab(56.87% -0.0385 -0.1014)
OKLCH	oklch(56.87% 0.109 249.2)
XYZ	xyz(17.3680, 18.5162, 45.8299)
Luminance	0.1852 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BB4 #B4783F

analogous

#3FB4B3 #3F7BB4 #3F40B4

triadic

#3F7BB4 #B43F7B #7BB43F

tetradic

#3F7BB4 #B33FB4 #B4783F #40B43F

square

#3F7BB4 #B33FB4 #B4783F #40B43F

split-complementary

#3F7BB4 #B43F40 #B4B33F

monochromatic

#1F3D59 #2F5C87 #3F7BB4 #6799CA #94B8DA

Accessibility & contrast

On white

4.46

#3F7BB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#3F7BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BB4

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BB4	#FFFFFF	#000000	##000000
##3F7BB4	1.00	4.46	4.70	4.70
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627DB6

Deuteranopia (green-blind)

#5272B3

Tritanopia (blue-blind)

#00888F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f7bb4;
/* rgb */ color: rgb(63, 123, 180);
/* oklch */ color: oklch(56.9% 0.109 249.2);

Tailwind

colors: {
  custom: {
    50: '#80a0ca',
    500: '#3f7bb4',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bb4;
$custom-light: #80a0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bb4",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 180
  },
  "hsl": {
    "h": 209.231,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.56873,
    "c": 0.10852,
    "h": 249.2
  },
  "luminance": 0.18518
}

Semantic roles & 50–950 ramp

primary

#3F7BB4

secondary

#C5A78A

accent

#9250D8

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F7BB4

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

Preview Lab → · Contrast checker → · Palette generator →