#3138B6#3138B6

#3138B6 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.6% C 0.194 H 272.3°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#3138B6
RGB	rgb(49, 56, 182)
HSL	hsl(237, 58%, 45%)
HSV	hsv(237, 73%, 71%)
CMYK	cmyk(73.1%, 69.2%, 0%, 28.6%)
CIE-LAB	lab(31.48, 39.90, -67.10)
CIE-LCH	lch(31.48, 78.06, 300.74°)
OKLab	oklab(42.58% 0.0077 -0.1941)
OKLCH	oklch(42.58% 0.194 272.3)
XYZ	xyz(11.1214, 6.8576, 44.9844)
Luminance	0.0686 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3138B6 #B6AF31

analogous

#317AB6 #3138B6 #6C31B6

triadic

#3138B6 #B63138 #38B631

tetradic

#3138B6 #B6317A #B6AF31 #31B66C

square

#3138B6 #B6317A #B6AF31 #31B66C

split-complementary

#3138B6 #B66C31 #7AB631

monochromatic

#171A56 #242986 #3138B6 #535AD1 #8488DE

Accessibility & contrast

On white

8.85

#3138B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#3138B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138B6

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138B6	#FFFFFF	#000000	##FFFFFF
##3138B6	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050BA

Deuteranopia (green-blind)

#0044B4

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3138b6;
/* rgb */ color: rgb(49, 56, 182);
/* oklch */ color: oklch(42.6% 0.194 272.3);

Tailwind

colors: {
  custom: {
    50: '#7d6fcd',
    500: '#3138b6',
    950: '#000000',
  },
}

SCSS

$custom: #3138b6;
$custom-light: #7d6fcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3138b6",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 182
  },
  "hsl": {
    "h": 236.842,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.42579,
    "c": 0.19421,
    "h": 272.3
  },
  "luminance": 0.06859
}

Semantic roles & 50–950 ramp

primary

#3138B6

secondary

#C7C37C

accent

#D947E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3138B6

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

Preview Lab → · Contrast checker → · Palette generator →