#377AC5#377AC5

#377AC5 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.3% C 0.134 H 253.4°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#377AC5
RGB	rgb(55, 122, 197)
HSL	hsl(212, 56%, 49%)
HSV	hsv(212, 72%, 77%)
CMYK	cmyk(72.1%, 38.1%, 0%, 22.7%)
CIE-LAB	lab(50.41, 4.10, -45.22)
CIE-LCH	lch(50.41, 45.41, 275.19°)
OKLab	oklab(57.3% -0.0385 -0.1288)
OKLCH	oklch(57.3% 0.134 253.4)
XYZ	xyz(18.6094, 18.7605, 55.4529)
Luminance	0.1876 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AC5 #C58237

analogous

#37C1C5 #377AC5 #3B37C5

triadic

#377AC5 #C5377A #7AC537

tetradic

#377AC5 #C537C1 #C58237 #37C53B

square

#377AC5 #C537C1 #C58237 #37C53B

split-complementary

#377AC5 #C53B37 #C1C537

monochromatic

#1C3F65 #2A5C95 #377AC5 #6599D4 #95B9E1

Accessibility & contrast

On white

4.42

#377AC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#377AC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377AC5

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AC5	#FFFFFF	#000000	##000000
##377AC5	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#577FC8

Deuteranopia (green-blind)

#4272C4

Tritanopia (blue-blind)

#008C96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377ac5;
/* rgb */ color: rgb(55, 122, 197);
/* oklch */ color: oklch(57.3% 0.134 253.4);

Tailwind

colors: {
  custom: {
    50: '#7fa0d7',
    500: '#377ac5',
    950: '#000000',
  },
}

SCSS

$custom: #377ac5;
$custom-light: #7fa0d7;
$custom-dark: #000000;

JSON

{
  "hex": "#377ac5",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 197
  },
  "hsl": {
    "h": 211.69,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.57303,
    "c": 0.13446,
    "h": 253.4
  },
  "luminance": 0.18763
}

Semantic roles & 50–950 ramp

primary

#377AC5

secondary

#CDAE8B

accent

#9848E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377AC5

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

Preview Lab → · Contrast checker → · Palette generator →