#4178BB#4178BB

#4178BB is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.7% C 0.120 H 254.5°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#4178BB
RGB	rgb(65, 120, 187)
HSL	hsl(213, 48%, 49%)
HSV	hsv(213, 65%, 73%)
CMYK	cmyk(65.2%, 35.8%, 0%, 26.7%)
CIE-LAB	lab(49.67, 3.34, -40.63)
CIE-LCH	lch(49.67, 40.77, 274.71°)
OKLab	oklab(56.66% -0.0319 -0.1153)
OKLCH	oklch(56.66% 0.12 254.5)
XYZ	xyz(17.8628, 18.1429, 49.5646)
Luminance	0.1815 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178BB #BB8441

analogous

#41B5BB #4178BB #4741BB

triadic

#4178BB #BB4178 #78BB41

tetradic

#4178BB #BB41B5 #BB8441 #41BB47

square

#4178BB #BB41B5 #BB8441 #41BB47

split-complementary

#4178BB #BB4741 #B5BB41

monochromatic

#213E60 #315B8E #4178BB #6D98CC #9AB8DC

Accessibility & contrast

On white

4.54

#4178BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#4178BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178BB

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178BB	#FFFFFF	#000000	##000000
##4178BB	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7CBE

Deuteranopia (green-blind)

#4A71BA

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4178bb;
/* rgb */ color: rgb(65, 120, 187);
/* oklch */ color: oklch(56.7% 0.120 254.5);

Tailwind

colors: {
  custom: {
    50: '#829ed0',
    500: '#4178bb',
    950: '#000000',
  },
}

SCSS

$custom: #4178bb;
$custom-light: #829ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#4178bb",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 187
  },
  "hsl": {
    "h": 212.951,
    "s": 48.413,
    "l": 49.412
  },
  "oklch": {
    "l": 0.56659,
    "c": 0.11961,
    "h": 254.5
  },
  "luminance": 0.18145
}

Semantic roles & 50–950 ramp

primary

#4178BB

secondary

#C8AF90

accent

#9B50D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4178BB

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

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