#277DA5#277DA5

#277DA5 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.8% C 0.100 H 233.2°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#277DA5
RGB	rgb(39, 125, 165)
HSL	hsl(199, 62%, 40%)
HSV	hsv(199, 76%, 65%)
CMYK	cmyk(76.4%, 24.2%, 0%, 35.3%)
CIE-LAB	lab(49.27, -11.38, -28.57)
CIE-LCH	lch(49.27, 30.76, 248.29°)
OKLab	oklab(55.76% -0.0601 -0.0805)
OKLCH	oklch(55.76% 0.1 233.2)
XYZ	xyz(14.9591, 17.8134, 38.2399)
Luminance	0.1782 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277DA5 #A54F27

analogous

#27A58E #277DA5 #273EA5

triadic

#277DA5 #A5277D #7DA527

tetradic

#277DA5 #8E27A5 #A54F27 #3EA527

square

#277DA5 #8E27A5 #A54F27 #3EA527

split-complementary

#277DA5 #A5273E #A58E27

monochromatic

#103242 #1B5774 #277DA5 #39A0D0 #6AB8DC

Accessibility & contrast

On white

4.60

#277DA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#277DA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277DA5

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277DA5	#FFFFFF	#000000	##FFFFFF
##277DA5	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697CA7

Deuteranopia (green-blind)

#5870A4

Tritanopia (blue-blind)

#00888B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #277da5;
/* rgb */ color: rgb(39, 125, 165);
/* oklch */ color: oklch(55.8% 0.100 233.2);

Tailwind

colors: {
  custom: {
    50: '#74a2c0',
    500: '#277da5',
    950: '#000000',
  },
}

SCSS

$custom: #277da5;
$custom-light: #74a2c0;
$custom-dark: #000000;

JSON

{
  "hex": "#277da5",
  "rgb": {
    "r": 39,
    "g": 125,
    "b": 165
  },
  "hsl": {
    "h": 199.048,
    "s": 61.765,
    "l": 40
  },
  "oklch": {
    "l": 0.5576,
    "c": 0.10045,
    "h": 233.2
  },
  "luminance": 0.17815
}

Semantic roles & 50–950 ramp

primary

#277DA5

secondary

#C28366

accent

#7643E5

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #277DA5

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

Preview Lab → · Contrast checker → · Palette generator →