#2B377B#2B377B

#2B377B is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.7% C 0.116 H 271.9°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#2B377B
RGB	rgb(43, 55, 123)
HSL	hsl(231, 48%, 33%)
HSV	hsv(231, 65%, 48%)
CMYK	cmyk(65%, 55.3%, 0%, 51.8%)
CIE-LAB	lab(25.79, 18.25, -40.34)
CIE-LCH	lch(25.79, 44.28, 294.34°)
OKLab	oklab(36.72% 0.0039 -0.1157)
OKLCH	oklch(36.72% 0.116 271.9)
XYZ	xyz(5.9364, 4.6755, 19.3247)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B377B #7B6F2B

analogous

#2B5F7B #2B377B #472B7B

triadic

#2B377B #7B2B37 #377B2B

tetradic

#2B377B #7B2B5F #7B6F2B #2B7B47

square

#2B377B #7B2B5F #7B6F2B #2B7B47

split-complementary

#2B377B #7B472B #5F7B2B

monochromatic

#0B0E20 #1B234E #2B377B #3B4BA8 #5B6BC6

Accessibility & contrast

On white

10.85

#2B377B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#2B377B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B377B

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B377B	#FFFFFF	#000000	##FFFFFF
##2B377B	1.00	10.85	1.94	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B417D

Deuteranopia (green-blind)

#003A7A

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2b377b;
/* rgb */ color: rgb(43, 55, 123);
/* oklch */ color: oklch(36.7% 0.116 271.9);

Tailwind

colors: {
  custom: {
    50: '#6d6da2',
    500: '#2b377b',
    950: '#000000',
  },
}

SCSS

$custom: #2b377b;
$custom-light: #6d6da2;
$custom-dark: #000000;

JSON

{
  "hex": "#2b377b",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 123
  },
  "hsl": {
    "h": 231,
    "s": 48.193,
    "l": 32.549
  },
  "oklch": {
    "l": 0.36722,
    "c": 0.11582,
    "h": 271.9
  },
  "luminance": 0.04676
}

Semantic roles & 50–950 ramp

primary

#2B377B

secondary

#AB9F56

accent

#C350D8

background

#F6F6FA

surface

#ECEBF3

border

#C7C6CD

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #2B377B

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

Preview Lab → · Contrast checker → · Palette generator →