#357BCB#357BCB

#357BCB is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.8% C 0.142 H 253.9°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#357BCB
RGB	rgb(53, 123, 203)
HSL	hsl(212, 59%, 50%)
HSV	hsv(212, 74%, 80%)
CMYK	cmyk(73.9%, 39.4%, 0%, 20.4%)
CIE-LAB	lab(50.96, 5.41, -47.78)
CIE-LCH	lch(50.96, 48.08, 276.46°)
OKLab	oklab(57.82% -0.0393 -0.1363)
OKLCH	oklch(57.82% 0.142 253.9)
XYZ	xyz(19.3266, 19.2324, 59.1820)
Luminance	0.1923 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#357BCB #CB8535

analogous

#35C6CB #357BCB #3A35CB

triadic

#357BCB #CB357B #7BCB35

tetradic

#357BCB #CB35C6 #CB8535 #35CB3A

square

#357BCB #CB35C6 #CB8535 #35CB3A

split-complementary

#357BCB #CB3A35 #C6CB35

monochromatic

#1B406A #285E9B #357BCB #669BD8 #96BBE4

Accessibility & contrast

On white

4.33

#357BCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#357BCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #357BCB

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##357BCB	#FFFFFF	#000000	##000000
##357BCB	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5581CE

Deuteranopia (green-blind)

#3D73C9

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #357bcb;
/* rgb */ color: rgb(53, 123, 203);
/* oklch */ color: oklch(57.8% 0.142 253.9);

Tailwind

colors: {
  custom: {
    50: '#80a0db',
    500: '#357bcb',
    950: '#000000',
  },
}

SCSS

$custom: #357bcb;
$custom-light: #80a0db;
$custom-dark: #000000;

JSON

{
  "hex": "#357bcb",
  "rgb": {
    "r": 53,
    "g": 123,
    "b": 203
  },
  "hsl": {
    "h": 212,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.57823,
    "c": 0.14186,
    "h": 253.9
  },
  "luminance": 0.19235
}

Semantic roles & 50–950 ramp

primary

#357BCB

secondary

#CFB08C

accent

#9946E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #357BCB

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

Preview Lab → · Contrast checker → · Palette generator →