#277B9D#277B9D

#277B9D is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 54.9% C 0.094 H 229.4°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#277B9D
RGB	rgb(39, 123, 157)
HSL	hsl(197, 60%, 38%)
HSV	hsv(197, 75%, 62%)
CMYK	cmyk(75.2%, 21.7%, 0%, 38.4%)
CIE-LAB	lab(48.30, -13.07, -25.41)
CIE-LCH	lch(48.30, 28.58, 242.79°)
OKLab	oklab(54.87% -0.0611 -0.0714)
OKLCH	oklch(54.87% 0.094 229.4)
XYZ	xyz(14.0030, 17.0299, 34.4409)
Luminance	0.1703 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277B9D #9D4927

analogous

#279D84 #277B9D #27409D

triadic

#277B9D #9D277B #7B9D27

tetradic

#277B9D #84279D #9D4927 #409D27

square

#277B9D #84279D #9D4927 #409D27

split-complementary

#277B9D #9D2740 #9D8427

monochromatic

#0F2E3B #1B556C #277B9D #35A1CD #66B8D9

Accessibility & contrast

On white

4.77

#277B9D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#277B9D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #277B9D

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277B9D	#FFFFFF	#000000	##FFFFFF
##277B9D	1.00	4.77	4.41	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#69799F

Deuteranopia (green-blind)

#596E9D

Tritanopia (blue-blind)

#008486

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #277b9d;
/* rgb */ color: rgb(39, 123, 157);
/* oklch */ color: oklch(54.9% 0.094 229.4);

Tailwind

colors: {
  custom: {
    50: '#73a1ba',
    500: '#277b9d',
    950: '#000000',
  },
}

SCSS

$custom: #277b9d;
$custom-light: #73a1ba;
$custom-dark: #000000;

JSON

{
  "hex": "#277b9d",
  "rgb": {
    "r": 39,
    "g": 123,
    "b": 157
  },
  "hsl": {
    "h": 197.288,
    "s": 60.204,
    "l": 38.431
  },
  "oklch": {
    "l": 0.5487,
    "c": 0.09393,
    "h": 229.4
  },
  "luminance": 0.17032
}

Semantic roles & 50–950 ramp

primary

#277B9D

secondary

#BF7C61

accent

#7244E3

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #277B9D

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

Preview Lab → · Contrast checker → · Palette generator →