#277EA3#277EA3

#277EA3 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 55.9% C 0.098 H 230.9°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#277EA3
RGB	rgb(39, 126, 163)
HSL	hsl(198, 61%, 40%)
HSV	hsv(198, 76%, 64%)
CMYK	cmyk(76.1%, 22.7%, 0%, 36.1%)
CIE-LAB	lab(49.49, -12.65, -27.07)
CIE-LCH	lch(49.49, 29.88, 244.94°)
OKLab	oklab(55.91% -0.0619 -0.0761)
OKLCH	oklch(55.91% 0.098 230.9)
XYZ	xyz(14.9057, 17.9956, 37.3311)
Luminance	0.1800 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277EA3 #A34C27

analogous

#27A38A #277EA3 #2740A3

triadic

#277EA3 #A3277E #7EA327

tetradic

#277EA3 #8A27A3 #A34C27 #40A327

square

#277EA3 #8A27A3 #A34C27 #40A327

split-complementary

#277EA3 #A32740 #A38A27

monochromatic

#0F3240 #1B5872 #277EA3 #38A2CF #69B9DB

Accessibility & contrast

On white

4.57

#277EA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#277EA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #277EA3

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277EA3	#FFFFFF	#000000	##000000
##277EA3	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7CA5

Deuteranopia (green-blind)

#5B70A2

Tritanopia (blue-blind)

#00888A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #277ea3;
/* rgb */ color: rgb(39, 126, 163);
/* oklch */ color: oklch(55.9% 0.098 230.9);

Tailwind

colors: {
  custom: {
    50: '#74a3be',
    500: '#277ea3',
    950: '#000000',
  },
}

SCSS

$custom: #277ea3;
$custom-light: #74a3be;
$custom-dark: #000000;

JSON

{
  "hex": "#277ea3",
  "rgb": {
    "r": 39,
    "g": 126,
    "b": 163
  },
  "hsl": {
    "h": 197.903,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.55908,
    "c": 0.09807,
    "h": 230.9
  },
  "luminance": 0.17997
}

Semantic roles & 50–950 ramp

primary

#277EA3

secondary

#C18064

accent

#7343E4

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #277EA3

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

Preview Lab → · Contrast checker → · Palette generator →