#277CB1#277CB1

#277CB1 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.1% C 0.114 H 241.0°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#277CB1
RGB	rgb(39, 124, 177)
HSL	hsl(203, 64%, 42%)
HSV	hsv(203, 78%, 69%)
CMYK	cmyk(78%, 29.9%, 0%, 30.6%)
CIE-LAB	lab(49.52, -6.47, -35.15)
CIE-LCH	lch(49.52, 35.74, 259.58°)
OKLab	oklab(56.14% -0.0551 -0.0995)
OKLCH	oklch(56.14% 0.114 241)
XYZ	xyz(15.9770, 18.0190, 44.2224)
Luminance	0.1802 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277CB1 #B15C27

analogous

#27B1A1 #277CB1 #2737B1

triadic

#277CB1 #B1277C #7CB127

tetradic

#277CB1 #A127B1 #B15C27 #37B127

square

#277CB1 #A127B1 #B15C27 #37B127

split-complementary

#277CB1 #B12737 #B1A127

monochromatic

#11364D #1C597F #277CB1 #409CD5 #72B6E0

Accessibility & contrast

On white

4.56

#277CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#277CB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #277CB1

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277CB1	#FFFFFF	#000000	##000000
##277CB1	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB3

Deuteranopia (green-blind)

#5070B0

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #277cb1;
/* rgb */ color: rgb(39, 124, 177);
/* oklch */ color: oklch(56.1% 0.114 241.0);

Tailwind

colors: {
  custom: {
    50: '#76a1c8',
    500: '#277cb1',
    950: '#000000',
  },
}

SCSS

$custom: #277cb1;
$custom-light: #76a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#277cb1",
  "rgb": {
    "r": 39,
    "g": 124,
    "b": 177
  },
  "hsl": {
    "h": 203.043,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.56142,
    "c": 0.11375,
    "h": 241
  },
  "luminance": 0.18021
}

Semantic roles & 50–950 ramp

primary

#277CB1

secondary

#C78F6D

accent

#8141E7

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #277CB1

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

Preview Lab → · Contrast checker → · Palette generator →