#277DA3#277DA3

#277DA3 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.7% C 0.099 H 231.9°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#277DA3
RGB	rgb(39, 125, 163)
HSL	hsl(198, 61%, 40%)
HSV	hsv(198, 76%, 64%)
CMYK	cmyk(76.1%, 23.3%, 0%, 36.1%)
CIE-LAB	lab(49.18, -12.09, -27.55)
CIE-LCH	lch(49.18, 30.08, 246.31°)
OKLab	oklab(55.66% -0.0609 -0.0775)
OKLCH	oklch(55.66% 0.099 231.9)
XYZ	xyz(14.7785, 17.7412, 37.2887)
Luminance	0.1774 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277DA3 #A34D27

analogous

#27A38B #277DA3 #273FA3

triadic

#277DA3 #A3277D #7DA327

tetradic

#277DA3 #8B27A3 #A34D27 #3FA327

square

#277DA3 #8B27A3 #A34D27 #3FA327

split-complementary

#277DA3 #A3273F #A38B27

monochromatic

#0F3140 #1B5772 #277DA3 #38A1CF #69B8DB

Accessibility & contrast

On white

4.62

#277DA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#277DA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277DA3

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277DA3	#FFFFFF	#000000	##FFFFFF
##277DA3	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7CA5

Deuteranopia (green-blind)

#5970A2

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #277da3;
/* rgb */ color: rgb(39, 125, 163);
/* oklch */ color: oklch(55.7% 0.099 231.9);

Tailwind

colors: {
  custom: {
    50: '#74a2be',
    500: '#277da3',
    950: '#000000',
  },
}

SCSS

$custom: #277da3;
$custom-light: #74a2be;
$custom-dark: #000000;

JSON

{
  "hex": "#277da3",
  "rgb": {
    "r": 39,
    "g": 125,
    "b": 163
  },
  "hsl": {
    "h": 198.387,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.55661,
    "c": 0.09854,
    "h": 231.9
  },
  "luminance": 0.17743
}

Semantic roles & 50–950 ramp

primary

#277DA3

secondary

#C18164

accent

#7543E4

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #277DA3

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

Preview Lab → · Contrast checker → · Palette generator →