#2F307B#2F307B

#2F307B is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.6% C 0.125 H 277.4°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#2F307B
RGB	rgb(47, 48, 123)
HSL	hsl(239, 45%, 33%)
HSV	hsv(239, 62%, 48%)
CMYK	cmyk(61.8%, 61%, 0%, 51.8%)
CIE-LAB	lab(24.15, 23.81, -42.98)
CIE-LCH	lch(24.15, 49.13, 298.98°)
OKLab	oklab(35.58% 0.0161 -0.1235)
OKLCH	oklch(35.58% 0.125 277.4)
XYZ	xyz(5.8032, 4.1479, 19.2299)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F307B #7B7A2F

analogous

#2F567B #2F307B #542F7B

triadic

#2F307B #7B2F30 #307B2F

tetradic

#2F307B #7B2F56 #7B7A2F #2F7B54

square

#2F307B #7B2F56 #7B7A2F #2F7B54

split-complementary

#2F307B #7B542F #567B2F

monochromatic

#0D0D22 #1E1F4F #2F307B #4041A7 #6263C3

Accessibility & contrast

On white

11.48

#2F307B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#2F307B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F307B

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F307B	#FFFFFF	#000000	##FFFFFF
##2F307B	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7D

Deuteranopia (green-blind)

#003679

Tritanopia (blue-blind)

#004250

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #2f307b;
/* rgb */ color: rgb(47, 48, 123);
/* oklch */ color: oklch(35.6% 0.125 277.4);

Tailwind

colors: {
  custom: {
    50: '#7068a2',
    500: '#2f307b',
    950: '#000000',
  },
}

SCSS

$custom: #2f307b;
$custom-light: #7068a2;
$custom-dark: #000000;

JSON

{
  "hex": "#2f307b",
  "rgb": {
    "r": 47,
    "g": 48,
    "b": 123
  },
  "hsl": {
    "h": 239.211,
    "s": 44.706,
    "l": 33.333
  },
  "oklch": {
    "l": 0.35576,
    "c": 0.12451,
    "h": 277.4
  },
  "luminance": 0.04148
}

Semantic roles & 50–950 ramp

primary

#2F307B

secondary

#AAA95C

accent

#D353D4

background

#F7F6FA

surface

#EDEBF3

border

#C8C6CD

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #2F307B

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

Preview Lab → · Contrast checker → · Palette generator →