#277D9F#277D9F

#277D9F is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.5% C 0.095 H 228.9°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#277D9F
RGB	rgb(39, 125, 159)
HSL	hsl(197, 61%, 39%)
HSV	hsv(197, 75%, 62%)
CMYK	cmyk(75.5%, 21.4%, 0%, 37.6%)
CIE-LAB	lab(49.01, -13.50, -25.48)
CIE-LCH	lch(49.01, 28.84, 242.09°)
OKLab	oklab(55.47% -0.0624 -0.0715)
OKLCH	oklch(55.47% 0.095 228.9)
XYZ	xyz(14.4258, 17.6001, 35.4310)
Luminance	0.1760 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277D9F #9F4927

analogous

#279F85 #277D9F #27419F

triadic

#277D9F #9F277D #7D9F27

tetradic

#277D9F #85279F #9F4927 #419F27

square

#277D9F #85279F #9F4927 #419F27

split-complementary

#277D9F #9F2741 #9F8527

monochromatic

#0F303D #1B566E #277D9F #36A3CE #67B9DA

Accessibility & contrast

On white

4.65

#277D9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#277D9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277D9F

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277D9F	#FFFFFF	#000000	##FFFFFF
##277D9F	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7BA1

Deuteranopia (green-blind)

#5B6F9F

Tritanopia (blue-blind)

#008788

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #277d9f;
/* rgb */ color: rgb(39, 125, 159);
/* oklch */ color: oklch(55.5% 0.095 228.9);

Tailwind

colors: {
  custom: {
    50: '#73a2bb',
    500: '#277d9f',
    950: '#000000',
  },
}

SCSS

$custom: #277d9f;
$custom-light: #73a2bb;
$custom-dark: #000000;

JSON

{
  "hex": "#277d9f",
  "rgb": {
    "r": 39,
    "g": 125,
    "b": 159
  },
  "hsl": {
    "h": 197,
    "s": 60.606,
    "l": 38.824
  },
  "oklch": {
    "l": 0.55465,
    "c": 0.09491,
    "h": 228.9
  },
  "luminance": 0.17602
}

Semantic roles & 50–950 ramp

primary

#277D9F

secondary

#C07D62

accent

#7144E4

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #277D9F

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

Preview Lab → · Contrast checker → · Palette generator →