#2F398B#2F398B

#2F398B is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.135 H 273.1°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#2F398B
RGB	rgb(47, 57, 139)
HSL	hsl(233, 49%, 36%)
HSV	hsv(233, 66%, 55%)
CMYK	cmyk(66.2%, 59%, 0%, 45.5%)
CIE-LAB	lab(27.83, 23.56, -47.03)
CIE-LCH	lch(27.83, 52.60, 296.61°)
OKLab	oklab(38.71% 0.0072 -0.1353)
OKLCH	oklch(38.71% 0.135 273.1)
XYZ	xyz(7.2941, 5.3940, 25.0779)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F398B #8B812F

analogous

#2F678B #2F398B #532F8B

triadic

#2F398B #8B2F39 #398B2F

tetradic

#2F398B #8B2F67 #8B812F #2F8B53

square

#2F398B #8B2F67 #8B812F #2F8B53

split-complementary

#2F398B #8B532F #678B2F

monochromatic

#101330 #20265D #2F398B #3E4CB9 #6873CC

Accessibility & contrast

On white

10.10

#2F398B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#2F398B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F398B

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F398B	#FFFFFF	#000000	##FFFFFF
##2F398B	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468E

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2f398b;
/* rgb */ color: rgb(47, 57, 139);
/* oklch */ color: oklch(38.7% 0.135 273.1);

Tailwind

colors: {
  custom: {
    50: '#736fae',
    500: '#2f398b',
    950: '#000000',
  },
}

SCSS

$custom: #2f398b;
$custom-light: #736fae;
$custom-dark: #000000;

JSON

{
  "hex": "#2f398b",
  "rgb": {
    "r": 47,
    "g": 57,
    "b": 139
  },
  "hsl": {
    "h": 233.478,
    "s": 49.462,
    "l": 36.471
  },
  "oklch": {
    "l": 0.38707,
    "c": 0.13547,
    "h": 273.1
  },
  "luminance": 0.05395
}

Semantic roles & 50–950 ramp

primary

#2F398B

secondary

#B3AA63

accent

#CA4FD9

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #2F398B

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

Preview Lab → · Contrast checker → · Palette generator →