#377FBC#377FBC

#377FBC is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.9% C 0.118 H 247.3°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#377FBC
RGB	rgb(55, 127, 188)
HSL	hsl(208, 55%, 48%)
HSV	hsv(208, 71%, 74%)
CMYK	cmyk(70.7%, 32.4%, 0%, 26.3%)
CIE-LAB	lab(51.40, -2.14, -38.49)
CIE-LCH	lch(51.40, 38.55, 266.81°)
OKLab	oklab(57.94% -0.0457 -0.1091)
OKLCH	oklch(57.94% 0.118 247.3)
XYZ	xyz(18.2386, 19.6198, 50.3930)
Luminance	0.1962 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377FBC #BC7437

analogous

#37BCB7 #377FBC #373CBC

triadic

#377FBC #BC377F #7FBC37

tetradic

#377FBC #B737BC #BC7437 #3CBC37

square

#377FBC #B737BC #BC7437 #3CBC37

split-complementary

#377FBC #BC373C #BCB737

monochromatic

#1B3F5D #295F8D #377FBC #609DD0 #8FBADE

Accessibility & contrast

On white

4.26

#377FBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#377FBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377FBC

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377FBC	#FFFFFF	#000000	##000000
##377FBC	1.00	4.26	4.92	4.92
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6481BF

Deuteranopia (green-blind)

#5175BB

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377fbc;
/* rgb */ color: rgb(55, 127, 188);
/* oklch */ color: oklch(57.9% 0.118 247.3);

Tailwind

colors: {
  custom: {
    50: '#7ea3d0',
    500: '#377fbc',
    950: '#000000',
  },
}

SCSS

$custom: #377fbc;
$custom-light: #7ea3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#377fbc",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 188
  },
  "hsl": {
    "h": 207.519,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57935,
    "c": 0.11827,
    "h": 247.3
  },
  "luminance": 0.19622
}

Semantic roles & 50–950 ramp

primary

#377FBC

secondary

#C9A586

accent

#8E4ADE

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #377FBC

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

Preview Lab → · Contrast checker → · Palette generator →