#2F379D#2F379D

#2F379D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.9% C 0.163 H 273.0°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#2F379D
RGB	rgb(47, 55, 157)
HSL	hsl(236, 54%, 40%)
HSV	hsv(236, 70%, 62%)
CMYK	cmyk(70.1%, 65%, 0%, 38.4%)
CIE-LAB	lab(28.83, 31.45, -56.45)
CIE-LCH	lch(28.83, 64.62, 299.13°)
OKLab	oklab(39.91% 0.0084 -0.163)
OKLCH	oklch(39.91% 0.163 273)
XYZ	xyz(8.6222, 5.7702, 32.5511)
Luminance	0.0577 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F379D #9D952F

analogous

#2F6E9D #2F379D #5E2F9D

triadic

#2F379D #9D2F37 #379D2F

tetradic

#2F379D #9D2F6E #9D952F #2F9D5E

square

#2F379D #9D2F6E #9D952F #2F9D5E

split-complementary

#2F379D #9D5E2F #6E9D2F

monochromatic

#13163F #21276E #2F379D #434CC7 #7279D5

Accessibility & contrast

On white

9.75

#2F379D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#2F379D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F379D

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F379D	#FFFFFF	#000000	##FFFFFF
##2F379D	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A0

Deuteranopia (green-blind)

#003F9B

Tritanopia (blue-blind)

#005165

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2f379d;
/* rgb */ color: rgb(47, 55, 157);
/* oklch */ color: oklch(39.9% 0.163 273.0);

Tailwind

colors: {
  custom: {
    50: '#776ebb',
    500: '#2f379d',
    950: '#000000',
  },
}

SCSS

$custom: #2f379d;
$custom-light: #776ebb;
$custom-dark: #000000;

JSON

{
  "hex": "#2f379d",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 157
  },
  "hsl": {
    "h": 235.636,
    "s": 53.922,
    "l": 40
  },
  "oklch": {
    "l": 0.39913,
    "c": 0.16318,
    "h": 273
  },
  "luminance": 0.05771
}

Semantic roles & 50–950 ramp

primary

#2F379D

secondary

#BCB66B

accent

#D34BDD

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2F379D

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

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