#2B307B#2B307B

#2B307B is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.3% C 0.126 H 275.0°. Best body text is #FFFFFF at 11.59:1 contrast (WCAG AA passes).

Color values

HEX	#2B307B
RGB	rgb(43, 48, 123)
HSL	hsl(236, 48%, 33%)
HSV	hsv(236, 65%, 48%)
CMYK	cmyk(65%, 61%, 0%, 51.8%)
CIE-LAB	lab(23.86, 23.07, -43.47)
CIE-LCH	lch(23.86, 49.21, 297.95°)
OKLab	oklab(35.28% 0.011 -0.125)
OKLCH	oklch(35.28% 0.126 275)
XYZ	xyz(5.6272, 4.0571, 19.2216)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B307B #7B762B

analogous

#2B587B #2B307B #4E2B7B

triadic

#2B307B #7B2B30 #307B2B

tetradic

#2B307B #7B2B58 #7B762B #2B7B4E

square

#2B307B #7B2B58 #7B762B #2B7B4E

split-complementary

#2B307B #7B4E2B #587B2B

monochromatic

#0B0D20 #1B1E4E #2B307B #3B42A8 #5B61C6

Accessibility & contrast

On white

11.59

#2B307B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#2B307B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B307B

11.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B307B	#FFFFFF	#000000	##FFFFFF
##2B307B	1.00	11.59	1.81	11.59
#FFFFFF	11.59	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7D

Deuteranopia (green-blind)

#003579

Tritanopia (blue-blind)

#004250

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #2b307b;
/* rgb */ color: rgb(43, 48, 123);
/* oklch */ color: oklch(35.3% 0.126 275.0);

Tailwind

colors: {
  custom: {
    50: '#6e68a2',
    500: '#2b307b',
    950: '#000000',
  },
}

SCSS

$custom: #2b307b;
$custom-light: #6e68a2;
$custom-dark: #000000;

JSON

{
  "hex": "#2b307b",
  "rgb": {
    "r": 43,
    "g": 48,
    "b": 123
  },
  "hsl": {
    "h": 236.25,
    "s": 48.193,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35281,
    "c": 0.12552,
    "h": 275
  },
  "luminance": 0.04058
}

Semantic roles & 50–950 ramp

primary

#2B307B

secondary

#ABA656

accent

#CF50D8

background

#F7F6FA

surface

#EDEBF3

border

#C8C6CD

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #2B307B

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

Preview Lab → · Contrast checker → · Palette generator →