#377AB4#377AB4

#377AB4 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.3% C 0.113 H 247.6°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#377AB4
RGB	rgb(55, 122, 180)
HSL	hsl(208, 53%, 46%)
HSV	hsv(208, 69%, 71%)
CMYK	cmyk(69.4%, 32.2%, 0%, 29.4%)
CIE-LAB	lab(49.53, -2.00, -36.84)
CIE-LCH	lch(49.53, 36.89, 266.89°)
OKLab	oklab(56.33% -0.0431 -0.1043)
OKLCH	oklch(56.33% 0.113 247.6)
XYZ	xyz(16.7702, 18.0248, 45.7665)
Luminance	0.1803 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AB4 #B47137

analogous

#37B4AF #377AB4 #373BB4

triadic

#377AB4 #B4377A #7AB437

tetradic

#377AB4 #AF37B4 #B47137 #3BB437

square

#377AB4 #AF37B4 #B47137 #3BB437

split-complementary

#377AB4 #B4373B #B4AF37

monochromatic

#1A3A56 #295A85 #377AB4 #5B98CD #8AB6DB

Accessibility & contrast

On white

4.56

#377AB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#377AB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377AB4

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AB4	#FFFFFF	#000000	##000000
##377AB4	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#607CB6

Deuteranopia (green-blind)

#4F70B3

Tritanopia (blue-blind)

#00888F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377ab4;
/* rgb */ color: rgb(55, 122, 180);
/* oklch */ color: oklch(56.3% 0.113 247.6);

Tailwind

colors: {
  custom: {
    50: '#7ca0ca',
    500: '#377ab4',
    950: '#000000',
  },
}

SCSS

$custom: #377ab4;
$custom-light: #7ca0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#377ab4",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 180
  },
  "hsl": {
    "h": 207.84,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.56326,
    "c": 0.11287,
    "h": 247.6
  },
  "luminance": 0.18027
}

Semantic roles & 50–950 ramp

primary

#377AB4

secondary

#C6A181

accent

#8F4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #377AB4

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

Preview Lab → · Contrast checker → · Palette generator →