#277DA6#277DA6

#277DA6 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.8% C 0.101 H 233.9°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#277DA6
RGB	rgb(39, 125, 166)
HSL	hsl(199, 62%, 40%)
HSV	hsv(199, 77%, 65%)
CMYK	cmyk(76.5%, 24.7%, 0%, 34.9%)
CIE-LAB	lab(49.31, -11.02, -29.09)
CIE-LCH	lch(49.31, 31.10, 249.25°)
OKLab	oklab(55.81% -0.0598 -0.0819)
OKLCH	oklch(55.81% 0.101 233.9)
XYZ	xyz(15.0505, 17.8500, 38.7212)
Luminance	0.1785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277DA6 #A65027

analogous

#27A68F #277DA6 #273EA6

triadic

#277DA6 #A6277D #7DA627

tetradic

#277DA6 #8F27A6 #A65027 #3EA627

square

#277DA6 #8F27A6 #A65027 #3EA627

split-complementary

#277DA6 #A6273E #A68F27

monochromatic

#103243 #1B5874 #277DA6 #3AA0D1 #6BB8DC

Accessibility & contrast

On white

4.59

#277DA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#277DA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277DA6

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277DA6	#FFFFFF	#000000	##FFFFFF
##277DA6	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697CA8

Deuteranopia (green-blind)

#5870A5

Tritanopia (blue-blind)

#00888B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #277da6;
/* rgb */ color: rgb(39, 125, 166);
/* oklch */ color: oklch(55.8% 0.101 233.9);

Tailwind

colors: {
  custom: {
    50: '#74a2c0',
    500: '#277da6',
    950: '#000000',
  },
}

SCSS

$custom: #277da6;
$custom-light: #74a2c0;
$custom-dark: #000000;

JSON

{
  "hex": "#277da6",
  "rgb": {
    "r": 39,
    "g": 125,
    "b": 166
  },
  "hsl": {
    "h": 199.37,
    "s": 61.951,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5581,
    "c": 0.10143,
    "h": 233.9
  },
  "luminance": 0.17852
}

Semantic roles & 50–950 ramp

primary

#277DA6

secondary

#C38466

accent

#7743E5

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #277DA6

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

Preview Lab → · Contrast checker → · Palette generator →