#277CC4#277CC4

#277CC4 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.2% C 0.136 H 248.7°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#277CC4
RGB	rgb(39, 124, 196)
HSL	hsl(208, 67%, 46%)
HSV	hsv(208, 80%, 77%)
CMYK	cmyk(80.1%, 36.7%, 0%, 23.1%)
CIE-LAB	lab(50.49, 0.57, -44.55)
CIE-LCH	lch(50.49, 44.55, 270.73°)
OKLab	oklab(57.22% -0.0495 -0.127)
OKLCH	oklch(57.22% 0.136 248.7)
XYZ	xyz(18.0043, 18.8300, 54.8995)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277CC4 #C46F27

analogous

#27C4BD #277CC4 #272DC4

triadic

#277CC4 #C4277C #7CC427

tetradic

#277CC4 #BD27C4 #C46F27 #2DC427

square

#277CC4 #BD27C4 #C46F27 #2DC427

split-complementary

#277CC4 #C4272D #C4BD27

monochromatic

#133B5E #1D5C91 #277CC4 #4D9ADC #80B7E6

Accessibility & contrast

On white

4.41

#277CC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#277CC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #277CC4

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277CC4	#FFFFFF	#000000	##000000
##277CC4	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A80C7

Deuteranopia (green-blind)

#4272C3

Tritanopia (blue-blind)

#008D96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #277cc4;
/* rgb */ color: rgb(39, 124, 196);
/* oklch */ color: oklch(57.2% 0.136 248.7);

Tailwind

colors: {
  custom: {
    50: '#7aa1d6',
    500: '#277cc4',
    950: '#000000',
  },
}

SCSS

$custom: #277cc4;
$custom-light: #7aa1d6;
$custom-dark: #000000;

JSON

{
  "hex": "#277cc4",
  "rgb": {
    "r": 39,
    "g": 124,
    "b": 196
  },
  "hsl": {
    "h": 207.516,
    "s": 66.809,
    "l": 46.078
  },
  "oklch": {
    "l": 0.57223,
    "c": 0.13631,
    "h": 248.7
  },
  "luminance": 0.18832
}

Semantic roles & 50–950 ramp

primary

#277CC4

secondary

#CEA079

accent

#8D3EEA

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #277CC4

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

Preview Lab → · Contrast checker → · Palette generator →