#277CA3#277CA3

#277CA3 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.4% C 0.099 H 232.8°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#277CA3
RGB	rgb(39, 124, 163)
HSL	hsl(199, 61%, 40%)
HSV	hsv(199, 76%, 64%)
CMYK	cmyk(76.1%, 23.9%, 0%, 36.1%)
CIE-LAB	lab(48.87, -11.52, -28.03)
CIE-LCH	lch(48.87, 30.30, 247.66°)
OKLab	oklab(55.41% -0.0599 -0.0789)
OKLCH	oklch(55.41% 0.099 232.8)
XYZ	xyz(14.6526, 17.4893, 37.2467)
Luminance	0.1749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277CA3 #A34E27

analogous

#27A38C #277CA3 #273EA3

triadic

#277CA3 #A3277C #7CA327

tetradic

#277CA3 #8C27A3 #A34E27 #3EA327

square

#277CA3 #8C27A3 #A34E27 #3EA327

split-complementary

#277CA3 #A3273E #A38C27

monochromatic

#0F3140 #1B5672 #277CA3 #38A0CF #69B7DB

Accessibility & contrast

On white

4.67

#277CA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#277CA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277CA3

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277CA3	#FFFFFF	#000000	##FFFFFF
##277CA3	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697BA5

Deuteranopia (green-blind)

#586FA2

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #277ca3;
/* rgb */ color: rgb(39, 124, 163);
/* oklch */ color: oklch(55.4% 0.099 232.8);

Tailwind

colors: {
  custom: {
    50: '#74a1be',
    500: '#277ca3',
    950: '#000000',
  },
}

SCSS

$custom: #277ca3;
$custom-light: #74a1be;
$custom-dark: #000000;

JSON

{
  "hex": "#277ca3",
  "rgb": {
    "r": 39,
    "g": 124,
    "b": 163
  },
  "hsl": {
    "h": 198.871,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.55413,
    "c": 0.09904,
    "h": 232.8
  },
  "luminance": 0.17491
}

Semantic roles & 50–950 ramp

primary

#277CA3

secondary

#C18264

accent

#7643E4

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #277CA3

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

Preview Lab → · Contrast checker → · Palette generator →