#277E9B#277E9B

#277E9B is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.5% C 0.091 H 224.7°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#277E9B
RGB	rgb(39, 126, 155)
HSL	hsl(195, 60%, 38%)
HSV	hsv(195, 75%, 61%)
CMYK	cmyk(74.8%, 18.7%, 0%, 39.2%)
CIE-LAB	lab(49.15, -15.45, -22.92)
CIE-LCH	lch(49.15, 27.64, 236.02°)
OKLab	oklab(55.53% -0.0649 -0.0642)
OKLCH	oklch(55.53% 0.091 224.7)
XYZ	xyz(14.2115, 17.7179, 33.6749)
Luminance	0.1772 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277E9B #9B4427

analogous

#279B7E #277E9B #27449B

triadic

#277E9B #9B277E #7E9B27

tetradic

#277E9B #7E279B #9B4427 #449B27

square

#277E9B #7E279B #9B4427 #449B27

split-complementary

#277E9B #9B2744 #9B7E27

monochromatic

#0E2F39 #1B566A #277E9B #33A6CC #64BBD8

Accessibility & contrast

On white

4.62

#277E9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#277E9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277E9B

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277E9B	#FFFFFF	#000000	##FFFFFF
##277E9B	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7B9C

Deuteranopia (green-blind)

#5E709B

Tritanopia (blue-blind)

#008787

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #277e9b;
/* rgb */ color: rgb(39, 126, 155);
/* oklch */ color: oklch(55.5% 0.091 224.7);

Tailwind

colors: {
  custom: {
    50: '#72a3b8',
    500: '#277e9b',
    950: '#000000',
  },
}

SCSS

$custom: #277e9b;
$custom-light: #72a3b8;
$custom-dark: #000000;

JSON

{
  "hex": "#277e9b",
  "rgb": {
    "r": 39,
    "g": 126,
    "b": 155
  },
  "hsl": {
    "h": 195,
    "s": 59.794,
    "l": 38.039
  },
  "oklch": {
    "l": 0.55525,
    "c": 0.0913,
    "h": 224.7
  },
  "luminance": 0.1772
}

Semantic roles & 50–950 ramp

primary

#277E9B

secondary

#BE7760

accent

#6C45E3

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #277E9B

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

Preview Lab → · Contrast checker → · Palette generator →