#277BC4#277BC4

#277BC4 is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.137 H 249.2°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#277BC4
RGB	rgb(39, 123, 196)
HSL	hsl(208, 67%, 46%)
HSV	hsv(208, 80%, 77%)
CMYK	cmyk(80.1%, 37.2%, 0%, 23.1%)
CIE-LAB	lab(50.19, 1.18, -45.02)
CIE-LCH	lch(50.19, 45.03, 271.50°)
OKLab	oklab(56.99% -0.0487 -0.1284)
OKLCH	oklch(56.99% 0.137 249.2)
XYZ	xyz(17.8797, 18.5806, 54.8579)
Luminance	0.1858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277BC4 #C47027

analogous

#27C4BE #277BC4 #272CC4

triadic

#277BC4 #C4277B #7BC427

tetradic

#277BC4 #BE27C4 #C47027 #2CC427

square

#277BC4 #BE27C4 #C47027 #2CC427

split-complementary

#277BC4 #C4272C #C4BE27

monochromatic

#133B5E #1D5B91 #277BC4 #4D99DC #80B6E6

Accessibility & contrast

On white

4.45

#277BC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#277BC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #277BC4

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277BC4	#FFFFFF	#000000	##000000
##277BC4	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#587FC7

Deuteranopia (green-blind)

#4171C3

Tritanopia (blue-blind)

#008C96

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #277bc4;
/* rgb */ color: rgb(39, 123, 196);
/* oklch */ color: oklch(57.0% 0.137 249.2);

Tailwind

colors: {
  custom: {
    50: '#7aa0d6',
    500: '#277bc4',
    950: '#000000',
  },
}

SCSS

$custom: #277bc4;
$custom-light: #7aa0d6;
$custom-dark: #000000;

JSON

{
  "hex": "#277bc4",
  "rgb": {
    "r": 39,
    "g": 123,
    "b": 196
  },
  "hsl": {
    "h": 207.898,
    "s": 66.809,
    "l": 46.078
  },
  "oklch": {
    "l": 0.56991,
    "c": 0.13729,
    "h": 249.2
  },
  "luminance": 0.18583
}

Semantic roles & 50–950 ramp

primary

#277BC4

secondary

#CEA079

accent

#8E3EEA

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #277BC4

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

Preview Lab → · Contrast checker → · Palette generator →