#277B8D#277B8D

#277B8D is a mid, moderate cyan. Relative luminance 0.165; OKLCH L 54.1% C 0.082 H 215.1°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#277B8D
RGB	rgb(39, 123, 141)
HSL	hsl(191, 57%, 35%)
HSV	hsv(191, 72%, 55%)
CMYK	cmyk(72.3%, 12.8%, 0%, 44.7%)
CIE-LAB	lab(47.65, -18.56, -17.01)
CIE-LCH	lch(47.65, 25.17, 222.51°)
OKLab	oklab(54.13% -0.0675 -0.0474)
OKLCH	oklch(54.13% 0.082 215.1)
XYZ	xyz(12.7254, 16.5189, 27.7119)
Luminance	0.1652 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277B8D #8D3927

analogous

#278D6C #277B8D #27488D

triadic

#277B8D #8D277B #7B8D27

tetradic

#277B8D #6C278D #8D3927 #488D27

square

#277B8D #6C278D #8D3927 #488D27

split-complementary

#277B8D #8D2748 #8D6C27

monochromatic

#0C272D #1A515D #277B8D #34A5BD #5CBDD2

Accessibility & contrast

On white

4.88

#277B8D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#277B8D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #277B8D

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277B8D	#FFFFFF	#000000	##FFFFFF
##277B8D	1.00	4.88	4.30	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E778E

Deuteranopia (green-blind)

#606D8D

Tritanopia (blue-blind)

#008281

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #277b8d;
/* rgb */ color: rgb(39, 123, 141);
/* oklch */ color: oklch(54.1% 0.082 215.1);

Tailwind

colors: {
  custom: {
    50: '#70a1ae',
    500: '#277b8d',
    950: '#000000',
  },
}

SCSS

$custom: #277b8d;
$custom-light: #70a1ae;
$custom-dark: #000000;

JSON

{
  "hex": "#277b8d",
  "rgb": {
    "r": 39,
    "g": 123,
    "b": 141
  },
  "hsl": {
    "h": 190.588,
    "s": 56.667,
    "l": 35.294
  },
  "oklch": {
    "l": 0.54134,
    "c": 0.08248,
    "h": 215.1
  },
  "luminance": 0.1652
}

Semantic roles & 50–950 ramp

primary

#277B8D

secondary

#B76959

accent

#6348E0

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080F10

muted

#7B7E7F

Preview Lab

Preview with #277B8D

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

Preview Lab → · Contrast checker → · Palette generator →