#3138B8#3138B8

#3138B8 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.8% C 0.197 H 272.2°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#3138B8
RGB	rgb(49, 56, 184)
HSL	hsl(237, 58%, 46%)
HSV	hsv(237, 73%, 72%)
CMYK	cmyk(73.4%, 69.6%, 0%, 27.8%)
CIE-LAB	lab(31.67, 40.59, -67.97)
CIE-LCH	lch(31.67, 79.16, 300.85°)
OKLab	oklab(42.78% 0.0074 -0.1966)
OKLCH	oklch(42.78% 0.197 272.2)
XYZ	xyz(11.3296, 6.9408, 46.0807)
Luminance	0.0694 (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

#3138B8 #B8B131

analogous

#317BB8 #3138B8 #6D31B8

triadic

#3138B8 #B83138 #38B831

tetradic

#3138B8 #B8317B #B8B131 #31B86D

square

#3138B8 #B8317B #B8B131 #31B86D

split-complementary

#3138B8 #B86D31 #7BB831

monochromatic

#171B57 #242988 #3138B8 #555BD2 #858ADE

Accessibility & contrast

On white

8.79

#3138B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3138B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138B8

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138B8	#FFFFFF	#000000	##FFFFFF
##3138B8	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BC

Deuteranopia (green-blind)

#0044B6

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3138b8;
/* rgb */ color: rgb(49, 56, 184);
/* oklch */ color: oklch(42.8% 0.197 272.2);

Tailwind

colors: {
  custom: {
    50: '#7e6fce',
    500: '#3138b8',
    950: '#000000',
  },
}

SCSS

$custom: #3138b8;
$custom-light: #7e6fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3138b8",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 184
  },
  "hsl": {
    "h": 236.889,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.42775,
    "c": 0.19674,
    "h": 272.2
  },
  "luminance": 0.06942
}

Semantic roles & 50–950 ramp

primary

#3138B8

secondary

#C8C47D

accent

#D947E1

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3138B8

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

Preview Lab → · Contrast checker → · Palette generator →