#277CB0#277CB0

#277CB0 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.1% C 0.113 H 240.5°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#277CB0
RGB	rgb(39, 124, 176)
HSL	hsl(203, 64%, 42%)
HSV	hsv(203, 78%, 69%)
CMYK	cmyk(77.8%, 29.5%, 0%, 31%)
CIE-LAB	lab(49.47, -6.83, -34.64)
CIE-LCH	lch(49.47, 35.31, 258.85°)
OKLab	oklab(56.09% -0.0554 -0.0981)
OKLCH	oklch(56.09% 0.113 240.5)
XYZ	xyz(15.8777, 17.9793, 43.6994)
Luminance	0.1798 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277CB0 #B05B27

analogous

#27B0A0 #277CB0 #2737B0

triadic

#277CB0 #B0277C #7CB027

tetradic

#277CB0 #A027B0 #B05B27 #37B027

square

#277CB0 #A027B0 #B05B27 #37B027

split-complementary

#277CB0 #B02737 #B0A027

monochromatic

#11354C #1C597E #277CB0 #409CD5 #72B6E0

Accessibility & contrast

On white

4.57

#277CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#277CB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #277CB0

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277CB0	#FFFFFF	#000000	##000000
##277CB0	1.00	4.57	4.60	4.60
#FFFFFF	4.57	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)

#647DB2

Deuteranopia (green-blind)

#5170AF

Tritanopia (blue-blind)

#00898E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #277cb0;
/* rgb */ color: rgb(39, 124, 176);
/* oklch */ color: oklch(56.1% 0.113 240.5);

Tailwind

colors: {
  custom: {
    50: '#76a1c8',
    500: '#277cb0',
    950: '#000000',
  },
}

SCSS

$custom: #277cb0;
$custom-light: #76a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#277cb0",
  "rgb": {
    "r": 39,
    "g": 124,
    "b": 176
  },
  "hsl": {
    "h": 202.774,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.56088,
    "c": 0.11264,
    "h": 240.5
  },
  "luminance": 0.17981
}

Semantic roles & 50–950 ramp

primary

#277CB0

secondary

#C78E6C

accent

#8041E7

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #277CB0

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

Preview Lab → · Contrast checker → · Palette generator →