#277AAD#277AAD

#277AAD is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.4% C 0.111 H 240.5°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#277AAD
RGB	rgb(39, 122, 173)
HSL	hsl(203, 63%, 42%)
HSV	hsv(203, 77%, 68%)
CMYK	cmyk(77.5%, 29.5%, 0%, 32.2%)
CIE-LAB	lab(48.72, -6.75, -34.09)
CIE-LCH	lch(48.72, 34.75, 258.80°)
OKLab	oklab(55.44% -0.0545 -0.0965)
OKLCH	oklch(55.44% 0.111 240.5)
XYZ	xyz(15.3361, 17.3657, 42.0707)
Luminance	0.1737 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277AAD #AD5A27

analogous

#27AD9D #277AAD #2737AD

triadic

#277AAD #AD277A #7AAD27

tetradic

#277AAD #9D27AD #AD5A27 #37AD27

square

#277AAD #9D27AD #AD5A27 #37AD27

split-complementary

#277AAD #AD2737 #AD9D27

monochromatic

#103449 #1C577B #277AAD #3E9AD3 #70B4DF

Accessibility & contrast

On white

4.69

#277AAD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#277AAD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #277AAD

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277AAD	#FFFFFF	#000000	##FFFFFF
##277AAD	1.00	4.69	4.47	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#627BAF

Deuteranopia (green-blind)

#506EAC

Tritanopia (blue-blind)

#00878C

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #277aad;
/* rgb */ color: rgb(39, 122, 173);
/* oklch */ color: oklch(55.4% 0.111 240.5);

Tailwind

colors: {
  custom: {
    50: '#75a0c5',
    500: '#277aad',
    950: '#000000',
  },
}

SCSS

$custom: #277aad;
$custom-light: #75a0c5;
$custom-dark: #000000;

JSON

{
  "hex": "#277aad",
  "rgb": {
    "r": 39,
    "g": 122,
    "b": 173
  },
  "hsl": {
    "h": 202.836,
    "s": 63.208,
    "l": 41.569
  },
  "oklch": {
    "l": 0.55444,
    "c": 0.11079,
    "h": 240.5
  },
  "luminance": 0.17368
}

Semantic roles & 50–950 ramp

primary

#277AAD

secondary

#C68D6A

accent

#8042E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #277AAD

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

Preview Lab → · Contrast checker → · Palette generator →