#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
RGBrgb(39, 125, 161)
HSLhsl(198, 61%, 39%)
HSVhsv(198, 76%, 63%)
CMYKcmyk(75.8%, 22.4%, 0%, 36.9%)
CIE-LABlab(49.09, -12.79, -26.52)
CIE-LCHlch(49.09, 29.44, 244.24°)
OKLaboklab(55.56% -0.0616 -0.0745)
OKLCHoklch(55.56% 0.097 230.4)
XYZxyz(14.6007, 17.6701, 36.3525)
Luminance0.1767 (WCAG relative)
Temperaturecool
Familycyan

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
##277DA11.004.634.534.63
#FFFFFF4.631.0021.001.00
#0000004.5321.001.0021.00
##FFFFFF4.631.0021.001.00

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 →

#277DA1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva