#3031B7#3031B7

#3031B7 is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 41.5% C 0.203 H 272.9°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#3031B7
RGB	rgb(48, 49, 183)
HSL	hsl(240, 58%, 45%)
HSV	hsv(240, 74%, 72%)
CMYK	cmyk(73.8%, 73.2%, 0%, 28.2%)
CIE-LAB	lab(30.02, 44.29, -70.10)
CIE-LCH	lch(30.02, 82.92, 302.28°)
OKLab	oklab(41.54% 0.0101 -0.2028)
OKLCH	oklch(41.54% 0.203 272.9)
XYZ	xyz(10.8616, 6.2428, 45.4231)
Luminance	0.0624 (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

#3031B7 #B7B630

analogous

#3074B7 #3031B7 #7330B7

triadic

#3031B7 #B73031 #31B730

tetradic

#3031B7 #B73074 #B7B630 #30B773

square

#3031B7 #B73074 #B7B630 #30B773

split-complementary

#3031B7 #B77330 #74B730

monochromatic

#171756 #232487 #3031B7 #5253D2 #8384DE

Accessibility & contrast

On white

9.34

#3031B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3031B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3031B7

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3031B7	#FFFFFF	#000000	##FFFFFF
##3031B7	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DBB

Deuteranopia (green-blind)

#0040B5

Tritanopia (blue-blind)

#005771

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3031b7;
/* rgb */ color: rgb(48, 49, 183);
/* oklch */ color: oklch(41.5% 0.203 272.9);

Tailwind

colors: {
  custom: {
    50: '#7e6bce',
    500: '#3031b7',
    950: '#000000',
  },
}

SCSS

$custom: #3031b7;
$custom-light: #7e6bce;
$custom-dark: #000000;

JSON

{
  "hex": "#3031b7",
  "rgb": {
    "r": 48,
    "g": 49,
    "b": 183
  },
  "hsl": {
    "h": 239.556,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.41543,
    "c": 0.20309,
    "h": 272.9
  },
  "luminance": 0.06244
}

Semantic roles & 50–950 ramp

primary

#3031B7

secondary

#C8C77B

accent

#E146E2

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3031B7

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

Preview Lab → · Contrast checker → · Palette generator →