#2F397B#2F397B

#2F397B is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.4% C 0.112 H 273.3°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#2F397B
RGB	rgb(47, 57, 123)
HSL	hsl(232, 45%, 33%)
HSV	hsv(232, 62%, 48%)
CMYK	cmyk(61.8%, 53.7%, 0%, 51.8%)
CIE-LAB	lab(26.62, 17.66, -38.99)
CIE-LCH	lch(26.62, 42.80, 294.37°)
OKLab	oklab(37.42% 0.0064 -0.1116)
OKLCH	oklch(37.42% 0.112 273.3)
XYZ	xyz(6.2094, 4.9602, 19.3652)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F397B #7B712F

analogous

#2F5F7B #2F397B #4B2F7B

triadic

#2F397B #7B2F39 #397B2F

tetradic

#2F397B #7B2F5F #7B712F #2F7B4B

square

#2F397B #7B2F5F #7B712F #2F7B4B

split-complementary

#2F397B #7B4B2F #5F7B2F

monochromatic

#0D1022 #1E244F #2F397B #404EA7 #626EC3

Accessibility & contrast

On white

10.54

#2F397B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#2F397B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F397B

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F397B	#FFFFFF	#000000	##FFFFFF
##2F397B	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14427D

Deuteranopia (green-blind)

#023C7A

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #2f397b;
/* rgb */ color: rgb(47, 57, 123);
/* oklch */ color: oklch(37.4% 0.112 273.3);

Tailwind

colors: {
  custom: {
    50: '#6f6fa2',
    500: '#2f397b',
    950: '#000000',
  },
}

SCSS

$custom: #2f397b;
$custom-light: #6f6fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#2f397b",
  "rgb": {
    "r": 47,
    "g": 57,
    "b": 123
  },
  "hsl": {
    "h": 232.105,
    "s": 44.706,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37418,
    "c": 0.11182,
    "h": 273.3
  },
  "luminance": 0.04961
}

Semantic roles & 50–950 ramp

primary

#2F397B

secondary

#AAA05C

accent

#C353D4

background

#F7F6FA

surface

#EDECF3

border

#C8C7CD

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #2F397B

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

Preview Lab → · Contrast checker → · Palette generator →