#377DB5#377DB5

#377DB5 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.112 H 245.7°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#377DB5
RGB	rgb(55, 125, 181)
HSL	hsl(207, 53%, 46%)
HSV	hsv(207, 70%, 71%)
CMYK	cmyk(69.6%, 30.9%, 0%, 29%)
CIE-LAB	lab(50.47, -3.43, -35.94)
CIE-LCH	lch(50.47, 36.10, 264.54°)
OKLab	oklab(57.08% -0.0458 -0.1016)
OKLCH	oklch(57.08% 0.112 245.7)
XYZ	xyz(17.2465, 18.8138, 46.4296)
Luminance	0.1882 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DB5 #B56F37

analogous

#37B5AE #377DB5 #373EB5

triadic

#377DB5 #B5377D #7DB537

tetradic

#377DB5 #AE37B5 #B56F37 #3EB537

square

#377DB5 #AE37B5 #B56F37 #3EB537

split-complementary

#377DB5 #B5373E #B5AE37

monochromatic

#1A3C57 #295D86 #377DB5 #5C9BCD #8BB8DC

Accessibility & contrast

On white

4.41

#377DB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#377DB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DB5

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DB5	#FFFFFF	#000000	##000000
##377DB5	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647FB7

Deuteranopia (green-blind)

#5273B4

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377db5;
/* rgb */ color: rgb(55, 125, 181);
/* oklch */ color: oklch(57.1% 0.112 245.7);

Tailwind

colors: {
  custom: {
    50: '#7ca2cb',
    500: '#377db5',
    950: '#000000',
  },
}

SCSS

$custom: #377db5;
$custom-light: #7ca2cb;
$custom-dark: #000000;

JSON

{
  "hex": "#377db5",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 181
  },
  "hsl": {
    "h": 206.667,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.57085,
    "c": 0.1115,
    "h": 245.7
  },
  "luminance": 0.18816
}

Semantic roles & 50–950 ramp

primary

#377DB5

secondary

#C6A082

accent

#8C4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #377DB5

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

Preview Lab → · Contrast checker → · Palette generator →