#4183BC#4183BC

#4183BC is a mid, moderate cyan. Relative luminance 0.210; OKLCH L 59.2% C 0.111 H 247.1°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#4183BC
RGB	rgb(65, 131, 188)
HSL	hsl(208, 49%, 50%)
HSV	hsv(208, 65%, 74%)
CMYK	cmyk(65.4%, 30.3%, 0%, 26.3%)
CIE-LAB	lab(52.93, -2.89, -36.06)
CIE-LCH	lch(52.93, 36.18, 265.42°)
OKLab	oklab(59.24% -0.0431 -0.1018)
OKLCH	oklch(59.24% 0.111 247.1)
XYZ	xyz(19.3700, 20.9853, 50.5970)
Luminance	0.2099 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4183BC #BC7A41

analogous

#41BCB8 #4183BC #4145BC

triadic

#4183BC #BC4183 #83BC41

tetradic

#4183BC #B841BC #BC7A41 #45BC41

square

#4183BC #B841BC #BC7A41 #45BC41

split-complementary

#4183BC #BC4145 #BCB841

monochromatic

#224461 #31638F #4183BC #6EA1CD #9BBEDC

Accessibility & contrast

On white

4.04

#4183BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#4183BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4183BC

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4183BC	#FFFFFF	#000000	##000000
##4183BC	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A85BE

Deuteranopia (green-blind)

#5979BB

Tritanopia (blue-blind)

#009197

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #4183bc;
/* rgb */ color: rgb(65, 131, 188);
/* oklch */ color: oklch(59.2% 0.111 247.1);

Tailwind

colors: {
  custom: {
    50: '#82a6d0',
    500: '#4183bc',
    950: '#000000',
  },
}

SCSS

$custom: #4183bc;
$custom-light: #82a6d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4183bc",
  "rgb": {
    "r": 65,
    "g": 131,
    "b": 188
  },
  "hsl": {
    "h": 207.805,
    "s": 48.617,
    "l": 49.608
  },
  "oklch": {
    "l": 0.59236,
    "c": 0.11058,
    "h": 247.1
  },
  "luminance": 0.20987
}

Semantic roles & 50–950 ramp

primary

#4183BC

secondary

#C9AA90

accent

#8F50D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #4183BC

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

Preview Lab → · Contrast checker → · Palette generator →