#2B3587#2B3587

#2B3587 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.136 H 272.6°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#2B3587
RGB	rgb(43, 53, 135)
HSL	hsl(233, 52%, 35%)
HSV	hsv(233, 68%, 53%)
CMYK	cmyk(68.1%, 60.7%, 0%, 47.1%)
CIE-LAB	lab(26.18, 24.12, -47.23)
CIE-LCH	lch(26.18, 53.03, 297.05°)
OKLab	oklab(37.31% 0.0063 -0.136)
OKLCH	oklch(37.31% 0.136 272.6)
XYZ	xyz(6.6411, 4.8085, 23.4951)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3587 #877D2B

analogous

#2B6387 #2B3587 #4F2B87

triadic

#2B3587 #872B35 #35872B

tetradic

#2B3587 #872B63 #877D2B #2B874F

square

#2B3587 #872B63 #877D2B #2B874F

split-complementary

#2B3587 #874F2B #63872B

monochromatic

#0D112A #1C2359 #2B3587 #3A47B5 #606CCC

Accessibility & contrast

On white

10.70

#2B3587 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#2B3587 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3587

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3587	#FFFFFF	#000000	##FFFFFF
##2B3587	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428A

Deuteranopia (green-blind)

#003A85

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2b3587;
/* rgb */ color: rgb(43, 53, 135);
/* oklch */ color: oklch(37.3% 0.136 272.6);

Tailwind

colors: {
  custom: {
    50: '#706cab',
    500: '#2b3587',
    950: '#000000',
  },
}

SCSS

$custom: #2b3587;
$custom-light: #706cab;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3587",
  "rgb": {
    "r": 43,
    "g": 53,
    "b": 135
  },
  "hsl": {
    "h": 233.478,
    "s": 51.685,
    "l": 34.902
  },
  "oklch": {
    "l": 0.37313,
    "c": 0.13617,
    "h": 272.6
  },
  "luminance": 0.04809
}

Semantic roles & 50–950 ramp

primary

#2B3587

secondary

#B2A95B

accent

#CC4DDB

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #2B3587

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

Preview Lab → · Contrast checker → · Palette generator →