#2B3588#2B3588

#2B3588 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.4% C 0.138 H 272.6°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#2B3588
RGB	rgb(43, 53, 136)
HSL	hsl(234, 52%, 35%)
HSV	hsv(234, 68%, 53%)
CMYK	cmyk(68.4%, 61%, 0%, 46.7%)
CIE-LAB	lab(26.26, 24.49, -47.72)
CIE-LCH	lch(26.26, 53.64, 297.17°)
OKLab	oklab(37.4% 0.0063 -0.1375)
OKLCH	oklch(37.4% 0.138 272.6)
XYZ	xyz(6.7118, 4.8368, 23.8677)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3588 #887E2B

analogous

#2B6488 #2B3588 #4F2B88

triadic

#2B3588 #882B35 #35882B

tetradic

#2B3588 #882B64 #887E2B #2B884F

square

#2B3588 #882B64 #887E2B #2B884F

split-complementary

#2B3588 #884F2B #64882B

monochromatic

#0E112B #1C235A #2B3588 #3A47B6 #616CCD

Accessibility & contrast

On white

10.67

#2B3588 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#2B3588 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3588

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3588	#FFFFFF	#000000	##FFFFFF
##2B3588	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428B

Deuteranopia (green-blind)

#003A86

Tritanopia (blue-blind)

#004A59

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2b3588;
/* rgb */ color: rgb(43, 53, 136);
/* oklch */ color: oklch(37.4% 0.138 272.6);

Tailwind

colors: {
  custom: {
    50: '#706cab',
    500: '#2b3588',
    950: '#000000',
  },
}

SCSS

$custom: #2b3588;
$custom-light: #706cab;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3588",
  "rgb": {
    "r": 43,
    "g": 53,
    "b": 136
  },
  "hsl": {
    "h": 233.548,
    "s": 51.955,
    "l": 35.098
  },
  "oklch": {
    "l": 0.374,
    "c": 0.13761,
    "h": 272.6
  },
  "luminance": 0.04837
}

Semantic roles & 50–950 ramp

primary

#2B3588

secondary

#B3AA5C

accent

#CC4CDB

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #2B3588

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

Preview Lab → · Contrast checker → · Palette generator →