#3138AD#3138AD

#3138AD is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.7% C 0.183 H 272.7°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#3138AD
RGB	rgb(49, 56, 173)
HSL	hsl(237, 56%, 44%)
HSV	hsv(237, 72%, 68%)
CMYK	cmyk(71.7%, 67.6%, 0%, 32.2%)
CIE-LAB	lab(30.63, 36.76, -63.12)
CIE-LCH	lch(30.63, 73.05, 300.21°)
OKLab	oklab(41.71% 0.0087 -0.1825)
OKLCH	oklch(41.71% 0.183 272.7)
XYZ	xyz(10.2211, 6.4974, 40.2425)
Luminance	0.0650 (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

#3138AD #ADA631

analogous

#3176AD #3138AD #6831AD

triadic

#3138AD #AD3138 #38AD31

tetradic

#3138AD #AD3176 #ADA631 #31AD68

square

#3138AD #AD3176 #ADA631 #31AD68

split-complementary

#3138AD #AD6831 #76AD31

monochromatic

#16194E #23297D #3138AD #4E55CD #7E83DA

Accessibility & contrast

On white

9.13

#3138AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3138AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138AD

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138AD	#FFFFFF	#000000	##FFFFFF
##3138AD	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB1

Deuteranopia (green-blind)

#0042AB

Tritanopia (blue-blind)

#00576E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3138ad;
/* rgb */ color: rgb(49, 56, 173);
/* oklch */ color: oklch(41.7% 0.183 272.7);

Tailwind

colors: {
  custom: {
    50: '#7b6fc6',
    500: '#3138ad',
    950: '#000000',
  },
}

SCSS

$custom: #3138ad;
$custom-light: #7b6fc6;
$custom-dark: #000000;

JSON

{
  "hex": "#3138ad",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 173
  },
  "hsl": {
    "h": 236.613,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.41709,
    "c": 0.18267,
    "h": 272.7
  },
  "luminance": 0.06498
}

Semantic roles & 50–950 ramp

primary

#3138AD

secondary

#C3BF77

accent

#D749DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3138AD

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

Preview Lab → · Contrast checker → · Palette generator →