#357BBB#357BBB

#357BBB is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 56.9% C 0.121 H 249.1°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#357BBB
RGB	rgb(53, 123, 187)
HSL	hsl(209, 56%, 47%)
HSV	hsv(209, 72%, 73%)
CMYK	cmyk(71.7%, 34.2%, 0%, 26.7%)
CIE-LAB	lab(50.11, -0.40, -39.96)
CIE-LCH	lch(50.11, 39.97, 269.42°)
OKLab	oklab(56.88% -0.0434 -0.1134)
OKLCH	oklch(56.88% 0.121 249.1)
XYZ	xyz(17.5174, 18.5087, 49.6534)
Luminance	0.1851 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#357BBB #BB7535

analogous

#35BBB8 #357BBB #3538BB

triadic

#357BBB #BB357B #7BBB35

tetradic

#357BBB #B835BB #BB7535 #38BB35

square

#357BBB #B835BB #BB7535 #38BB35

split-complementary

#357BBB #BB3538 #BBB835

monochromatic

#1A3C5C #275C8B #357BBB #5C99D1 #8CB7DE

Accessibility & contrast

On white

4.47

#357BBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#357BBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #357BBB

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##357BBB	#FFFFFF	#000000	##000000
##357BBB	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7EBE

Deuteranopia (green-blind)

#4B72BA

Tritanopia (blue-blind)

#008A92

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #357bbb;
/* rgb */ color: rgb(53, 123, 187);
/* oklch */ color: oklch(56.9% 0.121 249.1);

Tailwind

colors: {
  custom: {
    50: '#7da0d0',
    500: '#357bbb',
    950: '#000000',
  },
}

SCSS

$custom: #357bbb;
$custom-light: #7da0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#357bbb",
  "rgb": {
    "r": 53,
    "g": 123,
    "b": 187
  },
  "hsl": {
    "h": 208.657,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.5688,
    "c": 0.12145,
    "h": 249.1
  },
  "luminance": 0.18511
}

Semantic roles & 50–950 ramp

primary

#357BBB

secondary

#C9A483

accent

#9149DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #357BBB

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

Preview Lab → · Contrast checker → · Palette generator →