#277BAF#277BAF

#277BAF is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.8% C 0.112 H 240.8°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#277BAF
RGB	rgb(39, 123, 175)
HSL	hsl(203, 64%, 42%)
HSV	hsv(203, 78%, 69%)
CMYK	cmyk(77.7%, 29.7%, 0%, 31.4%)
CIE-LAB	lab(49.12, -6.61, -34.62)
CIE-LCH	lch(49.12, 35.24, 259.19°)
OKLab	oklab(55.79% -0.0548 -0.098)
OKLCH	oklch(55.79% 0.112 240.8)
XYZ	xyz(15.6545, 17.6905, 43.1387)
Luminance	0.1769 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277BAF #AF5B27

analogous

#27AF9F #277BAF #2737AF

triadic

#277BAF #AF277B #7BAF27

tetradic

#277BAF #9F27AF #AF5B27 #37AF27

square

#277BAF #9F27AF #AF5B27 #37AF27

split-complementary

#277BAF #AF2737 #AF9F27

monochromatic

#11354B #1C587D #277BAF #3F9BD4 #71B5DF

Accessibility & contrast

On white

4.63

#277BAF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#277BAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277BAF

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277BAF	#FFFFFF	#000000	##FFFFFF
##277BAF	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#637CB1

Deuteranopia (green-blind)

#506FAE

Tritanopia (blue-blind)

#00888D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #277baf;
/* rgb */ color: rgb(39, 123, 175);
/* oklch */ color: oklch(55.8% 0.112 240.8);

Tailwind

colors: {
  custom: {
    50: '#76a1c7',
    500: '#277baf',
    950: '#000000',
  },
}

SCSS

$custom: #277baf;
$custom-light: #76a1c7;
$custom-dark: #000000;

JSON

{
  "hex": "#277baf",
  "rgb": {
    "r": 39,
    "g": 123,
    "b": 175
  },
  "hsl": {
    "h": 202.941,
    "s": 63.551,
    "l": 41.961
  },
  "oklch": {
    "l": 0.55793,
    "c": 0.11227,
    "h": 240.8
  },
  "luminance": 0.17692
}

Semantic roles & 50–950 ramp

primary

#277BAF

secondary

#C68E6B

accent

#8041E7

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #277BAF

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

Preview Lab → · Contrast checker → · Palette generator →