#3181BA#3181BA

#3181BA is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.1% C 0.117 H 243.6°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#3181BA
RGB	rgb(49, 129, 186)
HSL	hsl(205, 58%, 46%)
HSV	hsv(205, 74%, 73%)
CMYK	cmyk(73.7%, 30.6%, 0%, 27.1%)
CIE-LAB	lab(51.72, -4.89, -36.86)
CIE-LCH	lch(51.72, 37.18, 262.44°)
OKLab	oklab(58.1% -0.0518 -0.1043)
OKLCH	oklch(58.1% 0.117 243.6)
XYZ	xyz(17.9764, 19.8966, 49.3379)
Luminance	0.1990 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181BA #BA6A31

analogous

#31BAAE #3181BA #313CBA

triadic

#3181BA #BA3181 #81BA31

tetradic

#3181BA #AE31BA #BA6A31 #3CBA31

square

#3181BA #AE31BA #BA6A31 #3CBA31

split-complementary

#3181BA #BA313C #BAAE31

monochromatic

#173E59 #245F8A #3181BA #569FD2 #86BADF

Accessibility & contrast

On white

4.22

#3181BA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#3181BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181BA

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181BA	#FFFFFF	#000000	##000000
##3181BA	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6782BC

Deuteranopia (green-blind)

#5475B9

Tritanopia (blue-blind)

#008F95

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3181ba;
/* rgb */ color: rgb(49, 129, 186);
/* oklch */ color: oklch(58.1% 0.117 243.6);

Tailwind

colors: {
  custom: {
    50: '#7ba5cf',
    500: '#3181ba',
    950: '#000000',
  },
}

SCSS

$custom: #3181ba;
$custom-light: #7ba5cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3181ba",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 186
  },
  "hsl": {
    "h": 204.964,
    "s": 58.298,
    "l": 46.078
  },
  "oklch": {
    "l": 0.581,
    "c": 0.11652,
    "h": 243.6
  },
  "luminance": 0.19899
}

Semantic roles & 50–950 ramp

primary

#3181BA

secondary

#C99D7E

accent

#8746E2

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3181BA

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

Preview Lab → · Contrast checker → · Palette generator →