#377DBB#377DBB

#377DBB is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.4% C 0.119 H 248.2°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#377DBB
RGB	rgb(55, 125, 187)
HSL	hsl(208, 55%, 47%)
HSV	hsv(208, 71%, 73%)
CMYK	cmyk(70.6%, 33.2%, 0%, 26.7%)
CIE-LAB	lab(50.76, -1.31, -38.92)
CIE-LCH	lch(50.76, 38.95, 268.08°)
OKLab	oklab(57.41% -0.044 -0.1104)
OKLCH	oklch(57.41% 0.119 248.2)
XYZ	xyz(17.8754, 19.0654, 49.7420)
Luminance	0.1907 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DBB #BB7537

analogous

#37BBB7 #377DBB #373BBB

triadic

#377DBB #BB377D #7DBB37

tetradic

#377DBB #B737BB #BB7537 #3BBB37

square

#377DBB #B737BB #BB7537 #3BBB37

split-complementary

#377DBB #BB373B #BBB737

monochromatic

#1B3E5C #295D8C #377DBB #5F9BD0 #8EB9DE

Accessibility & contrast

On white

4.36

#377DBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#377DBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DBB

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DBB	#FFFFFF	#000000	##000000
##377DBB	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6180BE

Deuteranopia (green-blind)

#4F73BA

Tritanopia (blue-blind)

#008C93

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377dbb;
/* rgb */ color: rgb(55, 125, 187);
/* oklch */ color: oklch(57.4% 0.119 248.2);

Tailwind

colors: {
  custom: {
    50: '#7da2d0',
    500: '#377dbb',
    950: '#000000',
  },
}

SCSS

$custom: #377dbb;
$custom-light: #7da2d0;
$custom-dark: #000000;

JSON

{
  "hex": "#377dbb",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 187
  },
  "hsl": {
    "h": 208.182,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.57414,
    "c": 0.11883,
    "h": 248.2
  },
  "luminance": 0.19067
}

Semantic roles & 50–950 ramp

primary

#377DBB

secondary

#C9A585

accent

#8F4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F14

muted

#7C7E82

Preview Lab

Preview with #377DBB

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

Preview Lab → · Contrast checker → · Palette generator →