#277BA3#277BA3

#277BA3 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.2% C 0.100 H 233.8°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#277BA3
RGB	rgb(39, 123, 163)
HSL	hsl(199, 61%, 40%)
HSV	hsv(199, 76%, 64%)
CMYK	cmyk(76.1%, 24.5%, 0%, 36.1%)
CIE-LAB	lab(48.56, -10.94, -28.51)
CIE-LCH	lch(48.56, 30.54, 249.00°)
OKLab	oklab(55.17% -0.0589 -0.0803)
OKLCH	oklch(55.17% 0.1 233.8)
XYZ	xyz(14.5279, 17.2399, 37.2052)
Luminance	0.1724 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277BA3 #A34F27

analogous

#27A38D #277BA3 #273DA3

triadic

#277BA3 #A3277B #7BA327

tetradic

#277BA3 #8D27A3 #A34F27 #3DA327

square

#277BA3 #8D27A3 #A34F27 #3DA327

split-complementary

#277BA3 #A3273D #A38D27

monochromatic

#0F3040 #1B5672 #277BA3 #389ECF #69B6DB

Accessibility & contrast

On white

4.72

#277BA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#277BA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #277BA3

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277BA3	#FFFFFF	#000000	##FFFFFF
##277BA3	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677AA5

Deuteranopia (green-blind)

#576EA2

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #277ba3;
/* rgb */ color: rgb(39, 123, 163);
/* oklch */ color: oklch(55.2% 0.100 233.8);

Tailwind

colors: {
  custom: {
    50: '#74a1be',
    500: '#277ba3',
    950: '#000000',
  },
}

SCSS

$custom: #277ba3;
$custom-light: #74a1be;
$custom-dark: #000000;

JSON

{
  "hex": "#277ba3",
  "rgb": {
    "r": 39,
    "g": 123,
    "b": 163
  },
  "hsl": {
    "h": 199.355,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.55166,
    "c": 0.09956,
    "h": 233.8
  },
  "luminance": 0.17242
}

Semantic roles & 50–950 ramp

primary

#277BA3

secondary

#C18264

accent

#7743E4

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #277BA3

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

Preview Lab → · Contrast checker → · Palette generator →