#277CA4#277CA4

#277CA4 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.5% C 0.100 H 233.5°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#277CA4
RGB	rgb(39, 124, 164)
HSL	hsl(199, 62%, 40%)
HSV	hsv(199, 76%, 64%)
CMYK	cmyk(76.2%, 24.4%, 0%, 35.7%)
CIE-LAB	lab(48.92, -11.16, -28.54)
CIE-LCH	lch(48.92, 30.65, 248.64°)
OKLab	oklab(55.46% -0.0595 -0.0804)
OKLCH	oklch(55.46% 0.1 233.5)
XYZ	xyz(14.7425, 17.5252, 37.7205)
Luminance	0.1753 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277CA4 #A44F27

analogous

#27A48E #277CA4 #273EA4

triadic

#277CA4 #A4277C #7CA427

tetradic

#277CA4 #8E27A4 #A44F27 #3EA427

square

#277CA4 #8E27A4 #A44F27 #3EA427

split-complementary

#277CA4 #A4273E #A48E27

monochromatic

#0F3141 #1B5773 #277CA4 #389FD0 #6AB7DC

Accessibility & contrast

On white

4.66

#277CA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#277CA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277CA4

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277CA4	#FFFFFF	#000000	##FFFFFF
##277CA4	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687BA6

Deuteranopia (green-blind)

#576FA3

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #277ca4;
/* rgb */ color: rgb(39, 124, 164);
/* oklch */ color: oklch(55.5% 0.100 233.5);

Tailwind

colors: {
  custom: {
    50: '#74a1bf',
    500: '#277ca4',
    950: '#000000',
  },
}

SCSS

$custom: #277ca4;
$custom-light: #74a1bf;
$custom-dark: #000000;

JSON

{
  "hex": "#277ca4",
  "rgb": {
    "r": 39,
    "g": 124,
    "b": 164
  },
  "hsl": {
    "h": 199.2,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.55463,
    "c": 0.10001,
    "h": 233.5
  },
  "luminance": 0.17527
}

Semantic roles & 50–950 ramp

primary

#277CA4

secondary

#C28365

accent

#7743E5

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #277CA4

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

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