#2F428B#2F428B

#2F428B is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.6% C 0.123 H 269.3°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#2F428B
RGB	rgb(47, 66, 139)
HSL	hsl(228, 49%, 36%)
HSV	hsv(228, 66%, 55%)
CMYK	cmyk(66.2%, 52.5%, 0%, 45.5%)
CIE-LAB	lab(30.31, 17.46, -43.01)
CIE-LCH	lch(30.31, 46.42, 292.10°)
OKLab	oklab(40.57% -0.0016 -0.1233)
OKLCH	oklch(40.57% 0.123 269.3)
XYZ	xyz(7.7791, 6.3641, 25.2395)
Luminance	0.0636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F428B #8B782F

analogous

#2F708B #2F428B #4A2F8B

triadic

#2F428B #8B2F42 #428B2F

tetradic

#2F428B #8B2F70 #8B782F #2F8B4A

square

#2F428B #8B2F70 #8B782F #2F8B4A

split-complementary

#2F428B #8B4A2F #708B2F

monochromatic

#101730 #202C5D #2F428B #3E58B9 #687DCC

Accessibility & contrast

On white

9.24

#2F428B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#2F428B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F428B

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F428B	#FFFFFF	#000000	##FFFFFF
##2F428B	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174C8E

Deuteranopia (green-blind)

#00438A

Tritanopia (blue-blind)

#005360

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2f428b;
/* rgb */ color: rgb(47, 66, 139);
/* oklch */ color: oklch(40.6% 0.123 269.3);

Tailwind

colors: {
  custom: {
    50: '#7276ad',
    500: '#2f428b',
    950: '#000000',
  },
}

SCSS

$custom: #2f428b;
$custom-light: #7276ad;
$custom-dark: #000000;

JSON

{
  "hex": "#2f428b",
  "rgb": {
    "r": 47,
    "g": 66,
    "b": 139
  },
  "hsl": {
    "h": 227.609,
    "s": 49.462,
    "l": 36.471
  },
  "oklch": {
    "l": 0.40572,
    "c": 0.12335,
    "h": 269.3
  },
  "luminance": 0.06365
}

Semantic roles & 50–950 ramp

primary

#2F428B

secondary

#B3A263

accent

#BC4FD9

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #2F428B

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

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