#377FBA#377FBA

#377FBA is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.8% C 0.116 H 246.4°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#377FBA
RGB	rgb(55, 127, 186)
HSL	hsl(207, 54%, 47%)
HSV	hsv(207, 70%, 73%)
CMYK	cmyk(70.4%, 31.7%, 0%, 27.1%)
CIE-LAB	lab(51.31, -2.85, -37.50)
CIE-LCH	lch(51.31, 37.60, 265.65°)
OKLab	oklab(57.83% -0.0463 -0.1062)
OKLCH	oklch(57.83% 0.116 246.4)
XYZ	xyz(18.0245, 19.5342, 49.2654)
Luminance	0.1954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377FBA #BA7237

analogous

#37BAB4 #377FBA #373DBA

triadic

#377FBA #BA377F #7FBA37

tetradic

#377FBA #B437BA #BA7237 #3DBA37

square

#377FBA #B437BA #BA7237 #3DBA37

split-complementary

#377FBA #BA373D #BAB437

monochromatic

#1B3E5C #295F8B #377FBA #5F9DD0 #8EBADE

Accessibility & contrast

On white

4.28

#377FBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#377FBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377FBA

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377FBA	#FFFFFF	#000000	##000000
##377FBA	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6481BD

Deuteranopia (green-blind)

#5275B9

Tritanopia (blue-blind)

#008D94

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377fba;
/* rgb */ color: rgb(55, 127, 186);
/* oklch */ color: oklch(57.8% 0.116 246.4);

Tailwind

colors: {
  custom: {
    50: '#7da3cf',
    500: '#377fba',
    950: '#000000',
  },
}

SCSS

$custom: #377fba;
$custom-light: #7da3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#377fba",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 186
  },
  "hsl": {
    "h": 207.023,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.57825,
    "c": 0.11583,
    "h": 246.4
  },
  "luminance": 0.19536
}

Semantic roles & 50–950 ramp

primary

#377FBA

secondary

#C8A385

accent

#8D4ADE

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #377FBA

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

Preview Lab → · Contrast checker → · Palette generator →