#357BB9#357BB9

#357BB9 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.8% C 0.119 H 248.3°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#357BB9
RGB	rgb(53, 123, 185)
HSL	hsl(208, 55%, 47%)
HSV	hsv(208, 71%, 73%)
CMYK	cmyk(71.4%, 33.5%, 0%, 27.5%)
CIE-LAB	lab(50.01, -1.12, -38.97)
CIE-LCH	lch(50.01, 38.99, 268.35°)
OKLab	oklab(56.77% -0.0439 -0.1106)
OKLCH	oklch(56.77% 0.119 248.3)
XYZ	xyz(17.3048, 18.4237, 48.5337)
Luminance	0.1843 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#357BB9 #B97335

analogous

#35B9B5 #357BB9 #3539B9

triadic

#357BB9 #B9357B #7BB935

tetradic

#357BB9 #B535B9 #B97335 #39B935

square

#357BB9 #B535B9 #B97335 #39B935

split-complementary

#357BB9 #B93539 #B9B535

monochromatic

#1A3C5A #275B89 #357BB9 #5B99D0 #8BB7DE

Accessibility & contrast

On white

4.48

#357BB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#357BB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #357BB9

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##357BB9	#FFFFFF	#000000	##000000
##357BB9	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7EBC

Deuteranopia (green-blind)

#4C71B8

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #357bb9;
/* rgb */ color: rgb(53, 123, 185);
/* oklch */ color: oklch(56.8% 0.119 248.3);

Tailwind

colors: {
  custom: {
    50: '#7ca0ce',
    500: '#357bb9',
    950: '#000000',
  },
}

SCSS

$custom: #357bb9;
$custom-light: #7ca0ce;
$custom-dark: #000000;

JSON

{
  "hex": "#357bb9",
  "rgb": {
    "r": 53,
    "g": 123,
    "b": 185
  },
  "hsl": {
    "h": 208.182,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.56767,
    "c": 0.11897,
    "h": 248.3
  },
  "luminance": 0.18426
}

Semantic roles & 50–950 ramp

primary

#357BB9

secondary

#C8A382

accent

#8F49DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #357BB9

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

Preview Lab → · Contrast checker → · Palette generator →