#3378B2#3378B2

#3378B2 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.6% C 0.114 H 247.1°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3378B2
RGB	rgb(51, 120, 178)
HSL	hsl(207, 55%, 45%)
HSV	hsv(207, 71%, 70%)
CMYK	cmyk(71.3%, 32.6%, 0%, 30.2%)
CIE-LAB	lab(48.70, -2.13, -37.00)
CIE-LCH	lch(48.70, 37.06, 266.70°)
OKLab	oklab(55.6% -0.0443 -0.1048)
OKLCH	oklch(55.6% 0.114 247.1)
XYZ	xyz(16.1145, 17.3493, 44.6103)
Luminance	0.1735 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378B2 #B26D33

analogous

#33B2AD #3378B2 #3338B2

triadic

#3378B2 #B23378 #78B233

tetradic

#3378B2 #AD33B2 #B26D33 #38B233

square

#3378B2 #AD33B2 #B26D33 #38B233

split-complementary

#3378B2 #B23338 #B2AD33

monochromatic

#183853 #255882 #3378B2 #5496CE #84B4DC

Accessibility & contrast

On white

4.70

#3378B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#3378B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3378B2

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378B2	#FFFFFF	#000000	##FFFFFF
##3378B2	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)

#5E7AB4

Deuteranopia (green-blind)

#4C6EB1

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3378b2;
/* rgb */ color: rgb(51, 120, 178);
/* oklch */ color: oklch(55.6% 0.114 247.1);

Tailwind

colors: {
  custom: {
    50: '#7a9ec9',
    500: '#3378b2',
    950: '#000000',
  },
}

SCSS

$custom: #3378b2;
$custom-light: #7a9ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3378b2",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 178
  },
  "hsl": {
    "h": 207.402,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.55604,
    "c": 0.11381,
    "h": 247.1
  },
  "luminance": 0.17351
}

Semantic roles & 50–950 ramp

primary

#3378B2

secondary

#C59D7C

accent

#8D49DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3378B2

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

Preview Lab → · Contrast checker → · Palette generator →