#277AB1#277AB1

#277AB1 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.7% C 0.115 H 242.5°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#277AB1
RGB	rgb(39, 122, 177)
HSL	hsl(204, 64%, 42%)
HSV	hsv(204, 78%, 69%)
CMYK	cmyk(78%, 31.1%, 0%, 30.6%)
CIE-LAB	lab(48.91, -5.28, -36.10)
CIE-LCH	lch(48.91, 36.49, 261.67°)
OKLab	oklab(55.66% -0.0532 -0.1023)
OKLCH	oklch(55.66% 0.115 242.5)
XYZ	xyz(15.7289, 17.5228, 44.1397)
Luminance	0.1752 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277AB1 #B15E27

analogous

#27B1A3 #277AB1 #2735B1

triadic

#277AB1 #B1277A #7AB127

tetradic

#277AB1 #A327B1 #B15E27 #35B127

square

#277AB1 #A327B1 #B15E27 #35B127

split-complementary

#277AB1 #B12735 #B1A327

monochromatic

#11354D #1C577F #277AB1 #409AD5 #72B4E0

Accessibility & contrast

On white

4.66

#277AB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#277AB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277AB1

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277AB1	#FFFFFF	#000000	##FFFFFF
##277AB1	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607BB3

Deuteranopia (green-blind)

#4D6EB0

Tritanopia (blue-blind)

#00888D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #277ab1;
/* rgb */ color: rgb(39, 122, 177);
/* oklch */ color: oklch(55.7% 0.115 242.5);

Tailwind

colors: {
  custom: {
    50: '#76a0c8',
    500: '#277ab1',
    950: '#000000',
  },
}

SCSS

$custom: #277ab1;
$custom-light: #76a0c8;
$custom-dark: #000000;

JSON

{
  "hex": "#277ab1",
  "rgb": {
    "r": 39,
    "g": 122,
    "b": 177
  },
  "hsl": {
    "h": 203.913,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.55662,
    "c": 0.11534,
    "h": 242.5
  },
  "luminance": 0.17525
}

Semantic roles & 50–950 ramp

primary

#277AB1

secondary

#C7916D

accent

#8341E7

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #277AB1

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

Preview Lab → · Contrast checker → · Palette generator →