#2B307A#2B307A

#2B307A is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.2% C 0.124 H 275.1°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#2B307A
RGB	rgb(43, 48, 122)
HSL	hsl(236, 48%, 32%)
HSV	hsv(236, 65%, 48%)
CMYK	cmyk(64.8%, 60.7%, 0%, 52.2%)
CIE-LAB	lab(23.78, 22.70, -42.97)
CIE-LCH	lch(23.78, 48.60, 297.84°)
OKLab	oklab(35.19% 0.011 -0.1236)
OKLCH	oklch(35.19% 0.124 275.1)
XYZ	xyz(5.5649, 4.0322, 18.8936)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B307A #7A752B

analogous

#2B577A #2B307A #4E2B7A

triadic

#2B307A #7A2B30 #307A2B

tetradic

#2B307A #7A2B57 #7A752B #2B7A4E

square

#2B307A #7A2B57 #7A752B #2B7A4E

split-complementary

#2B307A #7A4E2B #577A2B

monochromatic

#0B0C1F #1B1E4D #2B307A #3B42A7 #5A61C5

Accessibility & contrast

On white

11.62

#2B307A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#2B307A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B307A

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B307A	#FFFFFF	#000000	##FFFFFF
##2B307A	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7C

Deuteranopia (green-blind)

#003579

Tritanopia (blue-blind)

#004250

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #2b307a;
/* rgb */ color: rgb(43, 48, 122);
/* oklch */ color: oklch(35.2% 0.124 275.1);

Tailwind

colors: {
  custom: {
    50: '#6e68a1',
    500: '#2b307a',
    950: '#000000',
  },
}

SCSS

$custom: #2b307a;
$custom-light: #6e68a1;
$custom-dark: #000000;

JSON

{
  "hex": "#2b307a",
  "rgb": {
    "r": 43,
    "g": 48,
    "b": 122
  },
  "hsl": {
    "h": 236.203,
    "s": 47.879,
    "l": 32.353
  },
  "oklch": {
    "l": 0.35194,
    "c": 0.12405,
    "h": 275.1
  },
  "luminance": 0.04033
}

Semantic roles & 50–950 ramp

primary

#2B307A

secondary

#ABA556

accent

#CF50D7

background

#F6F6FA

surface

#ECEBF3

border

#C7C6CD

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #2B307A

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

Preview Lab → · Contrast checker → · Palette generator →