#3878B9#3878B9

#3878B9 is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.2% C 0.121 H 251.1°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3878B9
RGB	rgb(56, 120, 185)
HSL	hsl(210, 54%, 47%)
HSV	hsv(210, 70%, 73%)
CMYK	cmyk(69.7%, 35.1%, 0%, 27.5%)
CIE-LAB	lab(49.22, 1.14, -40.21)
CIE-LCH	lch(49.22, 40.22, 271.63°)
OKLab	oklab(56.18% -0.039 -0.1142)
OKLCH	oklch(56.18% 0.121 251.1)
XYZ	xyz(17.1011, 17.7747, 48.4191)
Luminance	0.1778 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878B9 #B97938

analogous

#38B8B9 #3878B9 #3938B9

triadic

#3878B9 #B93878 #78B938

tetradic

#3878B9 #B938B8 #B97938 #38B939

square

#3878B9 #B938B8 #B97938 #38B939

split-complementary

#3878B9 #B93938 #B8B938

monochromatic

#1C3B5B #2A5A8A #3878B9 #5F97CF #8EB5DD

Accessibility & contrast

On white

4.61

#3878B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3878B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3878B9

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878B9	#FFFFFF	#000000	##FFFFFF
##3878B9	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7CBC

Deuteranopia (green-blind)

#486FB8

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3878b9;
/* rgb */ color: rgb(56, 120, 185);
/* oklch */ color: oklch(56.2% 0.121 251.1);

Tailwind

colors: {
  custom: {
    50: '#7d9ece',
    500: '#3878b9',
    950: '#000000',
  },
}

SCSS

$custom: #3878b9;
$custom-light: #7d9ece;
$custom-dark: #000000;

JSON

{
  "hex": "#3878b9",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 185
  },
  "hsl": {
    "h": 210.233,
    "s": 53.527,
    "l": 47.255
  },
  "oklch": {
    "l": 0.5618,
    "c": 0.12064,
    "h": 251.1
  },
  "luminance": 0.17776
}

Semantic roles & 50–950 ramp

primary

#3878B9

secondary

#C8A785

accent

#944BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3878B9

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

Preview Lab → · Contrast checker → · Palette generator →