#4277CC#4277CC

#4277CC is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.5% C 0.143 H 259.4°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#4277CC
RGB	rgb(66, 119, 204)
HSL	hsl(217, 58%, 53%)
HSV	hsv(217, 68%, 80%)
CMYK	cmyk(67.6%, 41.7%, 0%, 20%)
CIE-LAB	lab(50.35, 10.12, -49.29)
CIE-LCH	lch(50.35, 50.32, 281.60°)
OKLab	oklab(57.5% -0.0262 -0.1406)
OKLCH	oklch(57.5% 0.143 259.4)
XYZ	xyz(19.7388, 18.7095, 59.6861)
Luminance	0.1871 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4277CC #CC9742

analogous

#42BCCC #4277CC #5242CC

triadic

#4277CC #CC4277 #77CC42

tetradic

#4277CC #CC42BC #CC9742 #42CC52

square

#4277CC #CC42BC #CC9742 #42CC52

split-complementary

#4277CC #CC5242 #BCCC42

monochromatic

#1F4074 #2C5AA4 #4277CC #729AD9 #A2BCE6

Accessibility & contrast

On white

4.43

#4277CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#4277CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4277CC

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4277CC	#FFFFFF	#000000	##000000
##4277CC	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F7FCF

Deuteranopia (green-blind)

#3972CA

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4277cc;
/* rgb */ color: rgb(66, 119, 204);
/* oklch */ color: oklch(57.5% 0.143 259.4);

Tailwind

colors: {
  custom: {
    50: '#859ddc',
    500: '#4277cc',
    950: '#000000',
  },
}

SCSS

$custom: #4277cc;
$custom-light: #859ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#4277cc",
  "rgb": {
    "r": 66,
    "g": 119,
    "b": 204
  },
  "hsl": {
    "h": 216.957,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.57496,
    "c": 0.14307,
    "h": 259.4
  },
  "luminance": 0.18712
}

Semantic roles & 50–950 ramp

primary

#4277CC

secondary

#D3BC97

accent

#A647E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4277CC

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

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