#3F77BF#3F77BF

#3F77BF is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.6% C 0.127 H 255.6°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3F77BF
RGB	rgb(63, 119, 191)
HSL	hsl(214, 50%, 50%)
HSV	hsv(214, 67%, 75%)
CMYK	cmyk(67%, 37.7%, 0%, 25.1%)
CIE-LAB	lab(49.51, 5.02, -43.19)
CIE-LCH	lch(49.51, 43.48, 276.63°)
OKLab	oklab(56.58% -0.0314 -0.1228)
OKLCH	oklch(56.58% 0.127 255.6)
XYZ	xyz(18.0473, 18.0102, 51.8053)
Luminance	0.1801 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77BF #BF873F

analogous

#3FB7BF #3F77BF #473FBF

triadic

#3F77BF #BF3F77 #77BF3F

tetradic

#3F77BF #BF3FB7 #BF873F #3FBF47

square

#3F77BF #BF3FB7 #BF873F #3FBF47

split-complementary

#3F77BF #BF473F #B7BF3F

monochromatic

#213E63 #305A91 #3F77BF #6D97CF #9BB8DE

Accessibility & contrast

On white

4.56

#3F77BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#3F77BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F77BF

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77BF	#FFFFFF	#000000	##000000
##3F77BF	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#577CC2

Deuteranopia (green-blind)

#4470BE

Tritanopia (blue-blind)

#008892

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3f77bf;
/* rgb */ color: rgb(63, 119, 191);
/* oklch */ color: oklch(56.6% 0.127 255.6);

Tailwind

colors: {
  custom: {
    50: '#819dd2',
    500: '#3f77bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f77bf;
$custom-light: #819dd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77bf",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 191
  },
  "hsl": {
    "h": 213.75,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.5658,
    "c": 0.12676,
    "h": 255.6
  },
  "luminance": 0.18012
}

Semantic roles & 50–950 ramp

primary

#3F77BF

secondary

#CAB190

accent

#9D4EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F77BF

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

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