#3138AC#3138AC

#3138AC is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.6% C 0.181 H 272.8°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#3138AC
RGB	rgb(49, 56, 172)
HSL	hsl(237, 56%, 43%)
HSV	hsv(237, 72%, 67%)
CMYK	cmyk(71.5%, 67.4%, 0%, 32.5%)
CIE-LAB	lab(30.54, 36.41, -62.68)
CIE-LCH	lch(30.54, 72.48, 300.15°)
OKLab	oklab(41.61% 0.0088 -0.1811)
OKLCH	oklch(41.61% 0.181 272.8)
XYZ	xyz(10.1247, 6.4589, 39.7348)
Luminance	0.0646 (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

#3138AC #ACA531

analogous

#3175AC #3138AC #6731AC

triadic

#3138AC #AC3138 #38AC31

tetradic

#3138AC #AC3175 #ACA531 #31AC67

square

#3138AC #AC3175 #ACA531 #31AC67

split-complementary

#3138AC #AC6731 #75AC31

monochromatic

#16194D #23287C #3138AC #4E55CC #7D83DA

Accessibility & contrast

On white

9.16

#3138AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#3138AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138AC

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138AC	#FFFFFF	#000000	##FFFFFF
##3138AC	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB0

Deuteranopia (green-blind)

#0042AA

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3138ac;
/* rgb */ color: rgb(49, 56, 172);
/* oklch */ color: oklch(41.6% 0.181 272.8);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3138ac",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 172
  },
  "hsl": {
    "h": 236.585,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.41614,
    "c": 0.18136,
    "h": 272.8
  },
  "luminance": 0.0646
}

Semantic roles & 50–950 ramp

primary

#3138AC

secondary

#C3BE76

accent

#D649DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3138AC

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

Preview Lab → · Contrast checker → · Palette generator →