#277EB0#277EB0

#277EB0 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.111 H 239.0°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#277EB0
RGB	rgb(39, 126, 176)
HSL	hsl(202, 64%, 42%)
HSV	hsv(202, 78%, 69%)
CMYK	cmyk(77.8%, 28.4%, 0%, 31%)
CIE-LAB	lab(50.08, -8.00, -33.69)
CIE-LCH	lch(50.08, 34.63, 256.64°)
OKLab	oklab(56.57% -0.0573 -0.0953)
OKLCH	oklch(56.57% 0.111 239)
XYZ	xyz(16.1309, 18.4857, 43.7838)
Luminance	0.1849 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277EB0 #B05927

analogous

#27B09E #277EB0 #2739B0

triadic

#277EB0 #B0277E #7EB027

tetradic

#277EB0 #9E27B0 #B05927 #39B027

square

#277EB0 #9E27B0 #B05927 #39B027

split-complementary

#277EB0 #B02739 #B09E27

monochromatic

#11364C #1C5A7E #277EB0 #409ED5 #72B8E0

Accessibility & contrast

On white

4.47

#277EB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#277EB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #277EB0

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277EB0	#FFFFFF	#000000	##000000
##277EB0	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667EB2

Deuteranopia (green-blind)

#5471AF

Tritanopia (blue-blind)

#008B8F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #277eb0;
/* rgb */ color: rgb(39, 126, 176);
/* oklch */ color: oklch(56.6% 0.111 239.0);

Tailwind

colors: {
  custom: {
    50: '#76a3c8',
    500: '#277eb0',
    950: '#000000',
  },
}

SCSS

$custom: #277eb0;
$custom-light: #76a3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#277eb0",
  "rgb": {
    "r": 39,
    "g": 126,
    "b": 176
  },
  "hsl": {
    "h": 201.898,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.56571,
    "c": 0.11118,
    "h": 239
  },
  "luminance": 0.18488
}

Semantic roles & 50–950 ramp

primary

#277EB0

secondary

#C78D6C

accent

#7E41E7

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #277EB0

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

Preview Lab → · Contrast checker → · Palette generator →