#357EB3#357EB3

#357EB3 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.1% C 0.109 H 243.5°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#357EB3
RGB	rgb(53, 126, 179)
HSL	hsl(205, 54%, 45%)
HSV	hsv(205, 70%, 70%)
CMYK	cmyk(70.4%, 29.6%, 0%, 29.8%)
CIE-LAB	lab(50.61, -5.04, -34.57)
CIE-LCH	lch(50.61, 34.93, 261.70°)
OKLab	oklab(57.14% -0.0487 -0.0977)
OKLCH	oklch(57.14% 0.109 243.5)
XYZ	xyz(17.0626, 18.9314, 45.3940)
Luminance	0.1893 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#357EB3 #B36A35

analogous

#35B3A9 #357EB3 #353FB3

triadic

#357EB3 #B3357E #7EB335

tetradic

#357EB3 #A935B3 #B36A35 #3FB335

square

#357EB3 #A935B3 #B36A35 #3FB335

split-complementary

#357EB3 #B3353F #B3A935

monochromatic

#193C55 #275D84 #357EB3 #589CCD #87B8DB

Accessibility & contrast

On white

4.39

#357EB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#357EB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #357EB3

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##357EB3	#FFFFFF	#000000	##000000
##357EB3	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667FB5

Deuteranopia (green-blind)

#5573B2

Tritanopia (blue-blind)

#008B91

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #357eb3;
/* rgb */ color: rgb(53, 126, 179);
/* oklch */ color: oklch(57.1% 0.109 243.5);

Tailwind

colors: {
  custom: {
    50: '#7ba3ca',
    500: '#357eb3',
    950: '#000000',
  },
}

SCSS

$custom: #357eb3;
$custom-light: #7ba3ca;
$custom-dark: #000000;

JSON

{
  "hex": "#357eb3",
  "rgb": {
    "r": 53,
    "g": 126,
    "b": 179
  },
  "hsl": {
    "h": 205.238,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.57144,
    "c": 0.10916,
    "h": 243.5
  },
  "luminance": 0.18933
}

Semantic roles & 50–950 ramp

primary

#357EB3

secondary

#C59C7F

accent

#884ADE

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #357EB3

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

Preview Lab → · Contrast checker → · Palette generator →