#3F77AF#3F77AF

#3F77AF is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.7% C 0.106 H 250.3°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F77AF
RGB	rgb(63, 119, 175)
HSL	hsl(210, 47%, 47%)
HSV	hsv(210, 64%, 69%)
CMYK	cmyk(64%, 32%, 0%, 31.4%)
CIE-LAB	lab(48.69, -0.58, -35.24)
CIE-LCH	lch(48.69, 35.24, 269.05°)
OKLab	oklab(55.67% -0.0357 -0.0996)
OKLCH	oklch(55.67% 0.106 250.3)
XYZ	xyz(16.3817, 17.3440, 43.0335)
Luminance	0.1735 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77AF #AF773F

analogous

#3FAFAF #3F77AF #3F3FAF

triadic

#3F77AF #AF3F77 #77AF3F

tetradic

#3F77AF #AF3FAF #AF773F #3FAF3F

square

#3F77AF #AF3FAF #AF773F #3FAF3F

split-complementary

#3F77AF #AF3F3F #AFAF3F

monochromatic

#1F3A55 #2F5882 #3F77AF #6496C7 #91B4D7

Accessibility & contrast

On white

4.70

#3F77AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#3F77AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F77AF

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77AF	#FFFFFF	#000000	##FFFFFF
##3F77AF	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7AB1

Deuteranopia (green-blind)

#506FAE

Tritanopia (blue-blind)

#00848B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3f77af;
/* rgb */ color: rgb(63, 119, 175);
/* oklch */ color: oklch(55.7% 0.106 250.3);

Tailwind

colors: {
  custom: {
    50: '#7f9ec7',
    500: '#3f77af',
    950: '#000000',
  },
}

SCSS

$custom: #3f77af;
$custom-light: #7f9ec7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77af",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 175
  },
  "hsl": {
    "h": 210,
    "s": 47.059,
    "l": 46.667
  },
  "oklch": {
    "l": 0.55673,
    "c": 0.1058,
    "h": 250.3
  },
  "luminance": 0.17346
}

Semantic roles & 50–950 ramp

primary

#3F77AF

secondary

#C3A587

accent

#9451D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F77AF

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

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