#4378B0#4378B0

#4378B0 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.1% C 0.104 H 251.3°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#4378B0
RGB	rgb(67, 120, 176)
HSL	hsl(211, 45%, 48%)
HSV	hsv(211, 62%, 69%)
CMYK	cmyk(61.9%, 31.8%, 0%, 31%)
CIE-LAB	lab(49.20, -0.08, -35.00)
CIE-LCH	lch(49.20, 35.00, 269.87°)
OKLab	oklab(56.14% -0.0334 -0.0988)
OKLCH	oklch(56.14% 0.104 251.3)
XYZ	xyz(16.8648, 17.7592, 43.6050)
Luminance	0.1776 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378B0 #B07B43

analogous

#43AEB0 #4378B0 #4543B0

triadic

#4378B0 #B04378 #78B043

tetradic

#4378B0 #B043AE #B07B43 #43B045

square

#4378B0 #B043AE #B07B43 #43B045

split-complementary

#4378B0 #B04543 #AEB043

monochromatic

#213C57 #325A84 #4378B0 #6A97C6 #96B6D7

Accessibility & contrast

On white

4.61

#4378B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#4378B0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4378B0

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378B0	#FFFFFF	#000000	##FFFFFF
##4378B0	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607BB2

Deuteranopia (green-blind)

#5170AF

Tritanopia (blue-blind)

#00858C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4378b0;
/* rgb */ color: rgb(67, 120, 176);
/* oklch */ color: oklch(56.1% 0.104 251.3);

Tailwind

colors: {
  custom: {
    50: '#819ec8',
    500: '#4378b0',
    950: '#000000',
  },
}

SCSS

$custom: #4378b0;
$custom-light: #819ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#4378b0",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 176
  },
  "hsl": {
    "h": 210.826,
    "s": 44.856,
    "l": 47.647
  },
  "oklch": {
    "l": 0.56137,
    "c": 0.10432,
    "h": 251.3
  },
  "luminance": 0.17761
}

Semantic roles & 50–950 ramp

primary

#4378B0

secondary

#C3A88C

accent

#9653D5

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #4378B0

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

Preview Lab → · Contrast checker → · Palette generator →