#2B307D#2B307D

#2B307D is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.5% C 0.128 H 274.9°. Best body text is #FFFFFF at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#2B307D
RGB	rgb(43, 48, 125)
HSL	hsl(236, 49%, 33%)
HSV	hsv(236, 66%, 49%)
CMYK	cmyk(65.6%, 61.6%, 0%, 51%)
CIE-LAB	lab(24.02, 23.81, -44.47)
CIE-LCH	lch(24.02, 50.44, 298.16°)
OKLab	oklab(35.46% 0.011 -0.128)
OKLCH	oklch(35.46% 0.128 274.9)
XYZ	xyz(5.7537, 4.1077, 19.8877)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B307D #7D782B

analogous

#2B597D #2B307D #4F2B7D

triadic

#2B307D #7D2B30 #307D2B

tetradic

#2B307D #7D2B59 #7D782B #2B7D4F

square

#2B307D #7D2B59 #7D782B #2B7D4F

split-complementary

#2B307D #7D4F2B #597D2B

monochromatic

#0C0D22 #1B1F4F #2B307D #3B41AB #5C62C7

Accessibility & contrast

On white

11.53

#2B307D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#2B307D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B307D

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B307D	#FFFFFF	#000000	##FFFFFF
##2B307D	1.00	11.53	1.82	11.53
#FFFFFF	11.53	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D80

Deuteranopia (green-blind)

#00367B

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #2b307d;
/* rgb */ color: rgb(43, 48, 125);
/* oklch */ color: oklch(35.5% 0.128 274.9);

Tailwind

colors: {
  custom: {
    50: '#6e68a3',
    500: '#2b307d',
    950: '#000000',
  },
}

SCSS

$custom: #2b307d;
$custom-light: #6e68a3;
$custom-dark: #000000;

JSON

{
  "hex": "#2b307d",
  "rgb": {
    "r": 43,
    "g": 48,
    "b": 125
  },
  "hsl": {
    "h": 236.341,
    "s": 48.81,
    "l": 32.941
  },
  "oklch": {
    "l": 0.35455,
    "c": 0.12843,
    "h": 274.9
  },
  "luminance": 0.04108
}

Semantic roles & 50–950 ramp

primary

#2B307D

secondary

#ADA757

accent

#D04FD8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #2B307D

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

Preview Lab → · Contrast checker → · Palette generator →