#377AD5#377AD5

#377AD5 is a mid, vivid cyan. Relative luminance 0.195; OKLCH L 58.3% C 0.155 H 257.0°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#377AD5
RGB	rgb(55, 122, 213)
HSL	hsl(215, 65%, 53%)
HSV	hsv(215, 74%, 84%)
CMYK	cmyk(74.2%, 42.7%, 0%, 16.5%)
CIE-LAB	lab(51.31, 9.94, -52.90)
CIE-LCH	lch(51.31, 53.82, 280.65°)
OKLab	oklab(58.29% -0.035 -0.1514)
OKLCH	oklch(58.29% 0.155 257)
XYZ	xyz(20.5409, 19.5331, 65.6256)
Luminance	0.1953 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AD5 #D59237

analogous

#37C9D5 #377AD5 #4337D5

triadic

#377AD5 #D5377A #7AD537

tetradic

#377AD5 #D537C9 #D59237 #37D543

square

#377AD5 #D537C9 #D59237 #37D543

split-complementary

#377AD5 #D54337 #C9D537

monochromatic

#194278 #245DAB #377AD5 #6A9CE0 #9CBDEA

Accessibility & contrast

On white

4.28

#377AD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#377AD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377AD5

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AD5	#FFFFFF	#000000	##000000
##377AD5	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)

#4D82D9

Deuteranopia (green-blind)

#3074D3

Tritanopia (blue-blind)

#008F9D

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377ad5;
/* rgb */ color: rgb(55, 122, 213);
/* oklch */ color: oklch(58.3% 0.155 257.0);

Tailwind

colors: {
  custom: {
    50: '#829fe2',
    500: '#377ad5',
    950: '#000000',
  },
}

SCSS

$custom: #377ad5;
$custom-light: #829fe2;
$custom-dark: #000000;

JSON

{
  "hex": "#377ad5",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 213
  },
  "hsl": {
    "h": 214.557,
    "s": 65.289,
    "l": 52.549
  },
  "oklch": {
    "l": 0.58295,
    "c": 0.15534,
    "h": 257
  },
  "luminance": 0.19535
}

Semantic roles & 50–950 ramp

primary

#377AD5

secondary

#D6B992

accent

#A140E8

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #377AD5

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

Preview Lab → · Contrast checker → · Palette generator →