#243DBC#243DBC

#243DBC is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.4% C 0.200 H 267.7°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#243DBC
RGB	rgb(36, 61, 188)
HSL	hsl(230, 68%, 44%)
HSV	hsv(230, 81%, 74%)
CMYK	cmyk(80.9%, 67.6%, 0%, 26.3%)
CIE-LAB	lab(32.57, 37.72, -68.87)
CIE-LCH	lch(32.57, 78.52, 298.71°)
OKLab	oklab(43.37% -0.0081 -0.1995)
OKLCH	oklch(43.37% 0.2 267.7)
XYZ	xyz(11.4702, 7.3420, 48.3798)
Luminance	0.0734 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.77

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243DBC #BCA324

analogous

#2489BC #243DBC #5724BC

triadic

#243DBC #BC243D #3DBC24

tetradic

#243DBC #BC2489 #BCA324 #24BC57

square

#243DBC #BC2489 #BCA324 #24BC57

split-complementary

#243DBC #BC5724 #89BC24

monochromatic

#101C55 #1A2C89 #243DBC #425BDB #7688E5

Accessibility & contrast

On white

8.51

#243DBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#243DBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243DBC

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243DBC	#FFFFFF	#000000	##FFFFFF
##243DBC	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C0

Deuteranopia (green-blind)

#0045BA

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #243dbc;
/* rgb */ color: rgb(36, 61, 188);
/* oklch */ color: oklch(43.4% 0.200 267.7);

Tailwind

colors: {
  custom: {
    50: '#7a72d1',
    500: '#243dbc',
    950: '#000000',
  },
}

SCSS

$custom: #243dbc;
$custom-light: #7a72d1;
$custom-dark: #000000;

JSON

{
  "hex": "#243dbc",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 188
  },
  "hsl": {
    "h": 230.132,
    "s": 67.857,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43373,
    "c": 0.19965,
    "h": 267.7
  },
  "luminance": 0.07343
}

Semantic roles & 50–950 ramp

primary

#243DBC

secondary

#CCBD70

accent

#CE3DEB

background

#F8F6FD

surface

#EFECFA

border

#CAC7D3

text

#0B0814

muted

#7C7B83

Preview Lab

Preview with #243DBC

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

Preview Lab → · Contrast checker → · Palette generator →