#277BAE#277BAE

#277BAE is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.7% C 0.111 H 240.3°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#277BAE
RGB	rgb(39, 123, 174)
HSL	hsl(203, 63%, 42%)
HSV	hsv(203, 78%, 68%)
CMYK	cmyk(77.6%, 29.3%, 0%, 31.8%)
CIE-LAB	lab(49.07, -6.97, -34.11)
CIE-LCH	lch(49.07, 34.82, 258.45°)
OKLab	oklab(55.74% -0.0551 -0.0965)
OKLCH	oklch(55.74% 0.111 240.3)
XYZ	xyz(15.5566, 17.6514, 42.6234)
Luminance	0.1765 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277BAE #AE5A27

analogous

#27AE9E #277BAE #2737AE

triadic

#277BAE #AE277B #7BAE27

tetradic

#277BAE #9E27AE #AE5A27 #37AE27

square

#277BAE #9E27AE #AE5A27 #37AE27

split-complementary

#277BAE #AE2737 #AE9E27

monochromatic

#11344A #1C587C #277BAE #3E9BD4 #70B5DF

Accessibility & contrast

On white

4.64

#277BAE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#277BAE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277BAE

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277BAE	#FFFFFF	#000000	##FFFFFF
##277BAE	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#637CB0

Deuteranopia (green-blind)

#516FAD

Tritanopia (blue-blind)

#00888D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #277bae;
/* rgb */ color: rgb(39, 123, 174);
/* oklch */ color: oklch(55.7% 0.111 240.3);

Tailwind

colors: {
  custom: {
    50: '#75a1c6',
    500: '#277bae',
    950: '#000000',
  },
}

SCSS

$custom: #277bae;
$custom-light: #75a1c6;
$custom-dark: #000000;

JSON

{
  "hex": "#277bae",
  "rgb": {
    "r": 39,
    "g": 123,
    "b": 174
  },
  "hsl": {
    "h": 202.667,
    "s": 63.38,
    "l": 41.765
  },
  "oklch": {
    "l": 0.55739,
    "c": 0.11116,
    "h": 240.3
  },
  "luminance": 0.17653
}

Semantic roles & 50–950 ramp

primary

#277BAE

secondary

#C68D6B

accent

#8041E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #277BAE

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

Preview Lab → · Contrast checker → · Palette generator →