#277E9F#277E9F

#277E9F is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.7% C 0.095 H 227.9°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#277E9F
RGB	rgb(39, 126, 159)
HSL	hsl(197, 61%, 39%)
HSV	hsv(197, 75%, 62%)
CMYK	cmyk(75.5%, 20.8%, 0%, 37.6%)
CIE-LAB	lab(49.32, -14.06, -25.00)
CIE-LCH	lch(49.32, 28.68, 240.65°)
OKLab	oklab(55.71% -0.0634 -0.0702)
OKLCH	oklch(55.71% 0.095 227.9)
XYZ	xyz(14.5530, 17.8545, 35.4734)
Luminance	0.1786 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277E9F #9F4827

analogous

#279F84 #277E9F #27429F

triadic

#277E9F #9F277E #7E9F27

tetradic

#277E9F #84279F #9F4827 #429F27

square

#277E9F #84279F #9F4827 #429F27

split-complementary

#277E9F #9F2742 #9F8427

monochromatic

#0F303D #1B576E #277E9F #36A4CE #67BADA

Accessibility & contrast

On white

4.59

#277E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#277E9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277E9F

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277E9F	#FFFFFF	#000000	##FFFFFF
##277E9F	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)

#6D7CA1

Deuteranopia (green-blind)

#5C709F

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #277e9f;
/* rgb */ color: rgb(39, 126, 159);
/* oklch */ color: oklch(55.7% 0.095 227.9);

Tailwind

colors: {
  custom: {
    50: '#73a3bb',
    500: '#277e9f',
    950: '#000000',
  },
}

SCSS

$custom: #277e9f;
$custom-light: #73a3bb;
$custom-dark: #000000;

JSON

{
  "hex": "#277e9f",
  "rgb": {
    "r": 39,
    "g": 126,
    "b": 159
  },
  "hsl": {
    "h": 196.5,
    "s": 60.606,
    "l": 38.824
  },
  "oklch": {
    "l": 0.55714,
    "c": 0.09454,
    "h": 227.9
  },
  "luminance": 0.17856
}

Semantic roles & 50–950 ramp

primary

#277E9F

secondary

#C07C62

accent

#7044E4

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #277E9F

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

Preview Lab → · Contrast checker → · Palette generator →