#3F7EB7#3F7EB7

#3F7EB7 is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.7% C 0.110 H 248.2°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#3F7EB7
RGB	rgb(63, 126, 183)
HSL	hsl(209, 49%, 48%)
HSV	hsv(209, 66%, 72%)
CMYK	cmyk(65.6%, 31.1%, 0%, 28.2%)
CIE-LAB	lab(51.15, -2.00, -36.00)
CIE-LCH	lch(51.15, 36.06, 266.82°)
OKLab	oklab(57.73% -0.0408 -0.1017)
OKLCH	oklch(57.73% 0.11 248.2)
XYZ	xyz(18.0548, 19.3955, 47.5828)
Luminance	0.1940 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7EB7 #B7783F

analogous

#3FB7B4 #3F7EB7 #3F42B7

triadic

#3F7EB7 #B73F7E #7EB73F

tetradic

#3F7EB7 #B43FB7 #B7783F #42B73F

square

#3F7EB7 #B43FB7 #B7783F #42B73F

split-complementary

#3F7EB7 #B73F42 #B7B43F

monochromatic

#203F5C #2F5F89 #3F7EB7 #689CCB #96BADB

Accessibility & contrast

On white

4.30

#3F7EB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#3F7EB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7EB7

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7EB7	#FFFFFF	#000000	##000000
##3F7EB7	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6580B9

Deuteranopia (green-blind)

#5575B6

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7eb7;
/* rgb */ color: rgb(63, 126, 183);
/* oklch */ color: oklch(57.7% 0.110 248.2);

Tailwind

colors: {
  custom: {
    50: '#80a3cd',
    500: '#3f7eb7',
    950: '#000000',
  },
}

SCSS

$custom: #3f7eb7;
$custom-light: #80a3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7eb7",
  "rgb": {
    "r": 63,
    "g": 126,
    "b": 183
  },
  "hsl": {
    "h": 208.5,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.5773,
    "c": 0.10961,
    "h": 248.2
  },
  "luminance": 0.19397
}

Semantic roles & 50–950 ramp

primary

#3F7EB7

secondary

#C6A78B

accent

#904FD8

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F7EB7

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

Preview Lab → · Contrast checker → · Palette generator →