#3138BD#3138BD

#3138BD is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.3% C 0.203 H 271.9°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#3138BD
RGB	rgb(49, 56, 189)
HSL	hsl(237, 59%, 47%)
HSV	hsv(237, 74%, 74%)
CMYK	cmyk(74.1%, 70.4%, 0%, 25.9%)
CIE-LAB	lab(32.16, 42.31, -70.12)
CIE-LCH	lch(32.16, 81.90, 301.10°)
OKLab	oklab(43.27% 0.0068 -0.2029)
OKLCH	oklch(43.27% 0.203 271.9)
XYZ	xyz(11.8630, 7.1542, 48.8899)
Luminance	0.0716 (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

#3138BD #BDB631

analogous

#317EBD #3138BD #7031BD

triadic

#3138BD #BD3138 #38BD31

tetradic

#3138BD #BD317E #BDB631 #31BD70

square

#3138BD #BD317E #BDB631 #31BD70

split-complementary

#3138BD #BD7031 #7EBD31

monochromatic

#181B5C #242A8C #3138BD #585ED4 #888DE0

Accessibility & contrast

On white

8.64

#3138BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3138BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138BD

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138BD	#FFFFFF	#000000	##FFFFFF
##3138BD	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C1

Deuteranopia (green-blind)

#0045BB

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3138bd;
/* rgb */ color: rgb(49, 56, 189);
/* oklch */ color: oklch(43.3% 0.203 271.9);

Tailwind

colors: {
  custom: {
    50: '#7f6fd2',
    500: '#3138bd',
    950: '#000000',
  },
}

SCSS

$custom: #3138bd;
$custom-light: #7f6fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3138bd",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 189
  },
  "hsl": {
    "h": 237,
    "s": 58.824,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43269,
    "c": 0.20301,
    "h": 271.9
  },
  "luminance": 0.07155
}

Semantic roles & 50–950 ramp

primary

#3138BD

secondary

#CAC680

accent

#DA46E2

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3138BD

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

Preview Lab → · Contrast checker → · Palette generator →