#3138B9#3138B9

#3138B9 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.9% C 0.198 H 272.1°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#3138B9
RGB	rgb(49, 56, 185)
HSL	hsl(237, 58%, 46%)
HSV	hsv(237, 74%, 73%)
CMYK	cmyk(73.5%, 69.7%, 0%, 27.5%)
CIE-LAB	lab(31.77, 40.93, -68.40)
CIE-LCH	lch(31.77, 79.71, 300.90°)
OKLab	oklab(42.87% 0.0073 -0.1979)
OKLCH	oklch(42.87% 0.198 272.1)
XYZ	xyz(11.4348, 6.9829, 46.6347)
Luminance	0.0698 (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

#3138B9 #B9B231

analogous

#317CB9 #3138B9 #6E31B9

triadic

#3138B9 #B93138 #38B931

tetradic

#3138B9 #B9317C #B9B231 #31B96E

square

#3138B9 #B9317C #B9B231 #31B96E

split-complementary

#3138B9 #B96E31 #7CB931

monochromatic

#171B58 #242989 #3138B9 #555CD2 #868ADF

Accessibility & contrast

On white

8.76

#3138B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3138B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138B9

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138B9	#FFFFFF	#000000	##FFFFFF
##3138B9	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BD

Deuteranopia (green-blind)

#0044B7

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3138b9;
/* rgb */ color: rgb(49, 56, 185);
/* oklch */ color: oklch(42.9% 0.198 272.1);

Tailwind

colors: {
  custom: {
    50: '#7e6fcf',
    500: '#3138b9',
    950: '#000000',
  },
}

SCSS

$custom: #3138b9;
$custom-light: #7e6fcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3138b9",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 185
  },
  "hsl": {
    "h": 236.912,
    "s": 58.12,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42873,
    "c": 0.198,
    "h": 272.1
  },
  "luminance": 0.06984
}

Semantic roles & 50–950 ramp

primary

#3138B9

secondary

#C8C57D

accent

#D946E1

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3138B9

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

Preview Lab → · Contrast checker → · Palette generator →