#377EA8#377EA8

#377EA8 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.6% C 0.096 H 237.8°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#377EA8
RGB	rgb(55, 126, 168)
HSL	hsl(202, 51%, 44%)
HSV	hsv(202, 67%, 66%)
CMYK	cmyk(67.3%, 25%, 0%, 34.1%)
CIE-LAB	lab(50.17, -8.55, -28.88)
CIE-LCH	lch(50.17, 30.12, 253.52°)
OKLab	oklab(56.65% -0.0511 -0.0812)
OKLCH	oklch(56.65% 0.096 237.8)
XYZ	xyz(16.1016, 18.5594, 39.7719)
Luminance	0.1856 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EA8 #A86137

analogous

#37A899 #377EA8 #3745A8

triadic

#377EA8 #A8377E #7EA837

tetradic

#377EA8 #9937A8 #A86137 #45A837

square

#377EA8 #9937A8 #A86137 #45A837

split-complementary

#377EA8 #A83745 #A89937

monochromatic

#19394C #285B7A #377EA8 #559DC7 #83B7D6

Accessibility & contrast

On white

4.46

#377EA8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#377EA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EA8

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EA8	#FFFFFF	#000000	##000000
##377EA8	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7EAA

Deuteranopia (green-blind)

#5B72A7

Tritanopia (blue-blind)

#00898C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377ea8;
/* rgb */ color: rgb(55, 126, 168);
/* oklch */ color: oklch(56.6% 0.096 237.8);

Tailwind

colors: {
  custom: {
    50: '#7aa3c2',
    500: '#377ea8',
    950: '#000000',
  },
}

SCSS

$custom: #377ea8;
$custom-light: #7aa3c2;
$custom-dark: #000000;

JSON

{
  "hex": "#377ea8",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 168
  },
  "hsl": {
    "h": 202.301,
    "s": 50.673,
    "l": 43.725
  },
  "oklch": {
    "l": 0.56649,
    "c": 0.09595,
    "h": 237.8
  },
  "luminance": 0.18561
}

Semantic roles & 50–950 ramp

primary

#377EA8

secondary

#C0957B

accent

#824EDA

background

#F7FAFB

surface

#EEF3F7

border

#C9CDD0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #377EA8

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

Preview Lab → · Contrast checker → · Palette generator →