#377BB6#377BB6

#377BB6 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.7% C 0.114 H 247.7°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#377BB6
RGB	rgb(55, 123, 182)
HSL	hsl(208, 54%, 46%)
HSV	hsv(208, 70%, 71%)
CMYK	cmyk(69.8%, 32.4%, 0%, 28.6%)
CIE-LAB	lab(49.92, -1.89, -37.37)
CIE-LCH	lch(49.92, 37.42, 267.10°)
OKLab	oklab(56.67% -0.0435 -0.1059)
OKLCH	oklch(56.67% 0.114 247.7)
XYZ	xyz(17.0988, 18.3537, 46.8884)
Luminance	0.1836 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BB6 #B67237

analogous

#37B6B2 #377BB6 #373CB6

triadic

#377BB6 #B6377B #7BB637

tetradic

#377BB6 #B237B6 #B67237 #3CB637

square

#377BB6 #B237B6 #B67237 #3CB637

split-complementary

#377BB6 #B6373C #B6B237

monochromatic

#1B3B58 #295B87 #377BB6 #5C99CE #8BB7DC

Accessibility & contrast

On white

4.50

#377BB6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#377BB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BB6

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BB6	#FFFFFF	#000000	##000000
##377BB6	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617DB9

Deuteranopia (green-blind)

#4F71B5

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377bb6;
/* rgb */ color: rgb(55, 123, 182);
/* oklch */ color: oklch(56.7% 0.114 247.7);

Tailwind

colors: {
  custom: {
    50: '#7da0cc',
    500: '#377bb6',
    950: '#000000',
  },
}

SCSS

$custom: #377bb6;
$custom-light: #7da0cc;
$custom-dark: #000000;

JSON

{
  "hex": "#377bb6",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 182
  },
  "hsl": {
    "h": 207.874,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.56671,
    "c": 0.11445,
    "h": 247.7
  },
  "luminance": 0.18356
}

Semantic roles & 50–950 ramp

primary

#377BB6

secondary

#C6A282

accent

#8F4BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #377BB6

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

Preview Lab → · Contrast checker → · Palette generator →