#2F4F8B#2F4F8B

#2F4F8B is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.5% C 0.106 H 261.8°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#2F4F8B
RGB	rgb(47, 79, 139)
HSL	hsl(219, 49%, 36%)
HSV	hsv(219, 66%, 55%)
CMYK	cmyk(66.2%, 43.2%, 0%, 45.5%)
CIE-LAB	lab(34.11, 8.72, -36.92)
CIE-LCH	lch(34.11, 37.94, 283.29°)
OKLab	oklab(43.47% -0.0151 -0.1053)
OKLCH	oklch(43.47% 0.106 261.8)
XYZ	xyz(8.6268, 8.0596, 25.5221)
Luminance	0.0806 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F4F8B #8B6B2F

analogous

#2F7D8B #2F4F8B #3D2F8B

triadic

#2F4F8B #8B2F4F #4F8B2F

tetradic

#2F4F8B #8B2F7D #8B6B2F #2F8B3D

square

#2F4F8B #8B2F7D #8B6B2F #2F8B3D

split-complementary

#2F4F8B #8B3D2F #7D8B2F

monochromatic

#101B30 #20355D #2F4F8B #3E69B9 #688BCC

Accessibility & contrast

On white

8.04

#2F4F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#2F4F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F4F8B

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F4F8B	#FFFFFF	#000000	##FFFFFF
##2F4F8B	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34558D

Deuteranopia (green-blind)

#254C8A

Tritanopia (blue-blind)

#005D66

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #2f4f8b;
/* rgb */ color: rgb(47, 79, 139);
/* oklch */ color: oklch(43.5% 0.106 261.8);

Tailwind

colors: {
  custom: {
    50: '#717fad',
    500: '#2f4f8b',
    950: '#000000',
  },
}

SCSS

$custom: #2f4f8b;
$custom-light: #717fad;
$custom-dark: #000000;

JSON

{
  "hex": "#2f4f8b",
  "rgb": {
    "r": 47,
    "g": 79,
    "b": 139
  },
  "hsl": {
    "h": 219.13,
    "s": 49.462,
    "l": 36.471
  },
  "oklch": {
    "l": 0.43474,
    "c": 0.10634,
    "h": 261.8
  },
  "luminance": 0.0806
}

Semantic roles & 50–950 ramp

primary

#2F4F8B

secondary

#B39763

accent

#A94FD9

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #2F4F8B

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

Preview Lab → · Contrast checker → · Palette generator →