#277BA1#277BA1

#277BA1 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.1% C 0.098 H 232.4°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#277BA1
RGB	rgb(39, 123, 161)
HSL	hsl(199, 61%, 39%)
HSV	hsv(199, 76%, 63%)
CMYK	cmyk(75.8%, 23.6%, 0%, 36.9%)
CIE-LAB	lab(48.47, -11.66, -27.48)
CIE-LCH	lch(48.47, 29.85, 247.02°)
OKLab	oklab(55.07% -0.0596 -0.0773)
OKLCH	oklch(55.07% 0.098 232.4)
XYZ	xyz(14.3501, 17.1688, 36.2689)
Luminance	0.1717 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277BA1 #A14D27

analogous

#27A18A #277BA1 #273EA1

triadic

#277BA1 #A1277B #7BA127

tetradic

#277BA1 #8A27A1 #A14D27 #3EA127

square

#277BA1 #8A27A1 #A14D27 #3EA127

split-complementary

#277BA1 #A1273E #A18A27

monochromatic

#0F303E #1B5570 #277BA1 #379FCE #68B7DA

Accessibility & contrast

On white

4.74

#277BA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#277BA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #277BA1

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277BA1	#FFFFFF	#000000	##FFFFFF
##277BA1	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)

#687AA3

Deuteranopia (green-blind)

#586EA0

Tritanopia (blue-blind)

#008588

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #277ba1;
/* rgb */ color: rgb(39, 123, 161);
/* oklch */ color: oklch(55.1% 0.098 232.4);

Tailwind

colors: {
  custom: {
    50: '#73a1bd',
    500: '#277ba1',
    950: '#000000',
  },
}

SCSS

$custom: #277ba1;
$custom-light: #73a1bd;
$custom-dark: #000000;

JSON

{
  "hex": "#277ba1",
  "rgb": {
    "r": 39,
    "g": 123,
    "b": 161
  },
  "hsl": {
    "h": 198.689,
    "s": 61,
    "l": 39.216
  },
  "oklch": {
    "l": 0.55066,
    "c": 0.09762,
    "h": 232.4
  },
  "luminance": 0.1717
}

Semantic roles & 50–950 ramp

primary

#277BA1

secondary

#C08063

accent

#7644E4

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #277BA1

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

Preview Lab → · Contrast checker → · Palette generator →