#277DA1#277DA1

#277DA1 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.6% C 0.097 H 230.4°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#277DA1
RGB	rgb(39, 125, 161)
HSL	hsl(198, 61%, 39%)
HSV	hsv(198, 76%, 63%)
CMYK	cmyk(75.8%, 22.4%, 0%, 36.9%)
CIE-LAB	lab(49.09, -12.79, -26.52)
CIE-LCH	lch(49.09, 29.44, 244.24°)
OKLab	oklab(55.56% -0.0616 -0.0745)
OKLCH	oklch(55.56% 0.097 230.4)
XYZ	xyz(14.6007, 17.6701, 36.3525)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277DA1 #A14B27

analogous

#27A188 #277DA1 #2740A1

triadic

#277DA1 #A1277D #7DA127

tetradic

#277DA1 #8827A1 #A14B27 #40A127

square

#277DA1 #8827A1 #A14B27 #40A127

split-complementary

#277DA1 #A12740 #A18827

monochromatic

#0F313E #1B5770 #277DA1 #37A2CE #68B9DA

Accessibility & contrast

On white

4.63

#277DA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#277DA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277DA1

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277DA1	#FFFFFF	#000000	##FFFFFF
##277DA1	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7BA3

Deuteranopia (green-blind)

#5A70A0

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #277da1;
/* rgb */ color: rgb(39, 125, 161);
/* oklch */ color: oklch(55.6% 0.097 230.4);

Tailwind

colors: {
  custom: {
    50: '#73a2bd',
    500: '#277da1',
    950: '#000000',
  },
}

SCSS

$custom: #277da1;
$custom-light: #73a2bd;
$custom-dark: #000000;

JSON

{
  "hex": "#277da1",
  "rgb": {
    "r": 39,
    "g": 125,
    "b": 161
  },
  "hsl": {
    "h": 197.705,
    "s": 61,
    "l": 39.216
  },
  "oklch": {
    "l": 0.55562,
    "c": 0.09669,
    "h": 230.4
  },
  "luminance": 0.17672
}

Semantic roles & 50–950 ramp

primary

#277DA1

secondary

#C07F63

accent

#7344E4

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #277DA1

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

Preview Lab → · Contrast checker → · Palette generator →