#2F377B#2F377B

#2F377B is a dark, moderate blue. Relative luminance 0.048; OKLCH L 37.0% C 0.115 H 274.3°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#2F377B
RGB	rgb(47, 55, 123)
HSL	hsl(234, 45%, 33%)
HSV	hsv(234, 62%, 48%)
CMYK	cmyk(61.8%, 55.3%, 0%, 51.8%)
CIE-LAB	lab(26.06, 19.04, -39.90)
CIE-LCH	lch(26.06, 44.21, 295.51°)
OKLab	oklab(36.99% 0.0086 -0.1143)
OKLCH	oklch(36.99% 0.115 274.3)
XYZ	xyz(6.1125, 4.7663, 19.3329)
Luminance	0.0477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F377B #7B732F

analogous

#2F5D7B #2F377B #4D2F7B

triadic

#2F377B #7B2F37 #377B2F

tetradic

#2F377B #7B2F5D #7B732F #2F7B4D

square

#2F377B #7B2F5D #7B732F #2F7B4D

split-complementary

#2F377B #7B4D2F #5D7B2F

monochromatic

#0D0F22 #1E234F #2F377B #404BA7 #626CC3

Accessibility & contrast

On white

10.75

#2F377B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#2F377B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F377B

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F377B	#FFFFFF	#000000	##FFFFFF
##2F377B	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D417D

Deuteranopia (green-blind)

#003B7A

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2f377b;
/* rgb */ color: rgb(47, 55, 123);
/* oklch */ color: oklch(37.0% 0.115 274.3);

Tailwind

colors: {
  custom: {
    50: '#6f6da2',
    500: '#2f377b',
    950: '#000000',
  },
}

SCSS

$custom: #2f377b;
$custom-light: #6f6da2;
$custom-dark: #000000;

JSON

{
  "hex": "#2f377b",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 123
  },
  "hsl": {
    "h": 233.684,
    "s": 44.706,
    "l": 33.333
  },
  "oklch": {
    "l": 0.36995,
    "c": 0.11466,
    "h": 274.3
  },
  "luminance": 0.04767
}

Semantic roles & 50–950 ramp

primary

#2F377B

secondary

#AAA25C

accent

#C753D4

background

#F7F6FA

surface

#EDEBF3

border

#C8C6CD

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #2F377B

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

Preview Lab → · Contrast checker → · Palette generator →