#2B3A8E#2B3A8E

#2B3A8E is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.140 H 270.8°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#2B3A8E
RGB	rgb(43, 58, 142)
HSL	hsl(231, 54%, 36%)
HSV	hsv(231, 70%, 56%)
CMYK	cmyk(69.7%, 59.2%, 0%, 44.3%)
CIE-LAB	lab(28.09, 23.35, -48.46)
CIE-LCH	lch(28.09, 53.80, 295.73°)
OKLab	oklab(38.91% 0.0019 -0.1396)
OKLCH	oklch(38.91% 0.14 270.8)
XYZ	xyz(7.3901, 5.4920, 26.2565)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3A8E #8E7F2B

analogous

#2B6C8E #2B3A8E #4E2B8E

triadic

#2B3A8E #8E2B3A #3A8E2B

tetradic

#2B3A8E #8E2B6C #8E7F2B #2B8E4E

square

#2B3A8E #8E2B6C #8E7F2B #2B8E4E

split-complementary

#2B3A8E #8E4E2B #6C8E2B

monochromatic

#0F1430 #1D275F #2B3A8E #394DBD #6374D0

Accessibility & contrast

On white

10.01

#2B3A8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#2B3A8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3A8E

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3A8E	#FFFFFF	#000000	##FFFFFF
##2B3A8E	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2b3a8e;
/* rgb */ color: rgb(43, 58, 142);
/* oklch */ color: oklch(38.9% 0.140 270.8);

Tailwind

colors: {
  custom: {
    50: '#7170b0',
    500: '#2b3a8e',
    950: '#000000',
  },
}

SCSS

$custom: #2b3a8e;
$custom-light: #7170b0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3a8e",
  "rgb": {
    "r": 43,
    "g": 58,
    "b": 142
  },
  "hsl": {
    "h": 230.909,
    "s": 53.514,
    "l": 36.275
  },
  "oklch": {
    "l": 0.38913,
    "c": 0.13961,
    "h": 270.8
  },
  "luminance": 0.05493
}

Semantic roles & 50–950 ramp

primary

#2B3A8E

secondary

#B6A95F

accent

#C74BDD

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #2B3A8E

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

Preview Lab → · Contrast checker → · Palette generator →