#357BB5#357BB5

#357BB5 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.5% C 0.114 H 246.7°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#357BB5
RGB	rgb(53, 123, 181)
HSL	hsl(207, 55%, 46%)
HSV	hsv(207, 71%, 71%)
CMYK	cmyk(70.7%, 32%, 0%, 29%)
CIE-LAB	lab(49.81, -2.55, -36.98)
CIE-LCH	lch(49.81, 37.07, 266.05°)
OKLab	oklab(56.55% -0.0451 -0.1047)
OKLCH	oklch(56.55% 0.114 246.7)
XYZ	xyz(16.8885, 18.2572, 46.3410)
Luminance	0.1826 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#357BB5 #B56F35

analogous

#35B5AF #357BB5 #353BB5

triadic

#357BB5 #B5357B #7BB535

tetradic

#357BB5 #AF35B5 #B56F35 #3BB535

square

#357BB5 #AF35B5 #B56F35 #3BB535

split-complementary

#357BB5 #B5353B #B5AF35

monochromatic

#193B56 #275B86 #357BB5 #5999CE #88B6DC

Accessibility & contrast

On white

4.51

#357BB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#357BB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #357BB5

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##357BB5	#FFFFFF	#000000	##000000
##357BB5	1.00	4.51	4.65	4.65
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617DB8

Deuteranopia (green-blind)

#4F71B4

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #357bb5;
/* rgb */ color: rgb(53, 123, 181);
/* oklch */ color: oklch(56.5% 0.114 246.7);

Tailwind

colors: {
  custom: {
    50: '#7ca0cb',
    500: '#357bb5',
    950: '#000000',
  },
}

SCSS

$custom: #357bb5;
$custom-light: #7ca0cb;
$custom-dark: #000000;

JSON

{
  "hex": "#357bb5",
  "rgb": {
    "r": 53,
    "g": 123,
    "b": 181
  },
  "hsl": {
    "h": 207.188,
    "s": 54.701,
    "l": 45.882
  },
  "oklch": {
    "l": 0.56545,
    "c": 0.11403,
    "h": 246.7
  },
  "luminance": 0.18259
}

Semantic roles & 50–950 ramp

primary

#357BB5

secondary

#C6A080

accent

#8D4ADE

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #357BB5

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

Preview Lab → · Contrast checker → · Palette generator →