#3181B2#3181B2

#3181B2 is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.7% C 0.107 H 239.6°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3181B2
RGB	rgb(49, 129, 178)
HSL	hsl(203, 57%, 45%)
HSV	hsv(203, 72%, 70%)
CMYK	cmyk(72.5%, 27.5%, 0%, 30.2%)
CIE-LAB	lab(51.34, -7.73, -32.85)
CIE-LCH	lch(51.34, 33.75, 256.75°)
OKLab	oklab(57.68% -0.0544 -0.0927)
OKLCH	oklch(57.68% 0.108 239.6)
XYZ	xyz(17.1496, 19.5659, 44.9836)
Luminance	0.1957 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181B2 #B26231

analogous

#31B2A3 #3181B2 #3140B2

triadic

#3181B2 #B23181 #81B231

tetradic

#3181B2 #A331B2 #B26231 #40B231

square

#3181B2 #A331B2 #B26231 #40B231

split-complementary

#3181B2 #B23140 #B2A331

monochromatic

#173B52 #245E82 #3181B2 #519FCF #81BADC

Accessibility & contrast

On white

4.27

#3181B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#3181B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181B2

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181B2	#FFFFFF	#000000	##000000
##3181B2	1.00	4.27	4.91	4.91
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A81B4

Deuteranopia (green-blind)

#5875B1

Tritanopia (blue-blind)

#008D92

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3181b2;
/* rgb */ color: rgb(49, 129, 178);
/* oklch */ color: oklch(57.7% 0.107 239.6);

Tailwind

colors: {
  custom: {
    50: '#7aa5c9',
    500: '#3181b2',
    950: '#000000',
  },
}

SCSS

$custom: #3181b2;
$custom-light: #7aa5c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3181b2",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 178
  },
  "hsl": {
    "h": 202.791,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.57677,
    "c": 0.1075,
    "h": 239.6
  },
  "luminance": 0.19568
}

Semantic roles & 50–950 ramp

primary

#3181B2

secondary

#C59679

accent

#8248E0

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3181B2

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

Preview Lab → · Contrast checker → · Palette generator →