#277C99#277C99

#277C99 is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 54.9% C 0.090 H 225.2°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#277C99
RGB	rgb(39, 124, 153)
HSL	hsl(195, 59%, 38%)
HSV	hsv(195, 75%, 60%)
CMYK	cmyk(74.5%, 19%, 0%, 40%)
CIE-LAB	lab(48.44, -15.02, -22.85)
CIE-LCH	lch(48.44, 27.34, 236.67°)
OKLab	oklab(54.93% -0.0636 -0.064)
OKLCH	oklch(54.93% 0.09 225.2)
XYZ	xyz(13.7918, 17.1449, 32.7132)
Luminance	0.1715 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277C99 #994427

analogous

#27997D #277C99 #274399

triadic

#277C99 #99277C #7C9927

tetradic

#277C99 #7D2799 #994427 #439927

square

#277C99 #7D2799 #994427 #439927

split-complementary

#277C99 #992743 #997D27

monochromatic

#0E2D37 #1B5468 #277C99 #33A4CA #63BAD7

Accessibility & contrast

On white

4.74

#277C99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#277C99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #277C99

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277C99	#FFFFFF	#000000	##FFFFFF
##277C99	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C799A

Deuteranopia (green-blind)

#5D6E99

Tritanopia (blue-blind)

#008585

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #277c99;
/* rgb */ color: rgb(39, 124, 153);
/* oklch */ color: oklch(54.9% 0.090 225.2);

Tailwind

colors: {
  custom: {
    50: '#72a2b7',
    500: '#277c99',
    950: '#000000',
  },
}

SCSS

$custom: #277c99;
$custom-light: #72a2b7;
$custom-dark: #000000;

JSON

{
  "hex": "#277c99",
  "rgb": {
    "r": 39,
    "g": 124,
    "b": 153
  },
  "hsl": {
    "h": 195.263,
    "s": 59.375,
    "l": 37.647
  },
  "oklch": {
    "l": 0.54929,
    "c": 0.09026,
    "h": 225.2
  },
  "luminance": 0.17147
}

Semantic roles & 50–950 ramp

primary

#277C99

secondary

#BD775F

accent

#6D45E3

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #277C99

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

Preview Lab → · Contrast checker → · Palette generator →