#1830B4#1830B4

#1830B4 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 40.0% C 0.206 H 266.7°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#1830B4
RGB	rgb(24, 48, 180)
HSL	hsl(231, 76%, 40%)
HSV	hsv(231, 87%, 71%)
CMYK	cmyk(86.7%, 73.3%, 0%, 29.4%)
CIE-LAB	lab(28.39, 42.09, -71.05)
CIE-LCH	lch(28.39, 82.58, 300.64°)
OKLab	oklab(39.98% -0.012 -0.206)
OKLCH	oklch(39.98% 0.206 266.7)
XYZ	xyz(9.6690, 5.6022, 43.7429)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1830B4 #B49C18

analogous

#187EB4 #1830B4 #4E18B4

triadic

#1830B4 #B41830 #30B418

tetradic

#1830B4 #B4187E #B49C18 #18B44E

square

#1830B4 #B4187E #B49C18 #18B44E

split-complementary

#1830B4 #B44E18 #7EB418

monochromatic

#0A1348 #11227E #1830B4 #2744E2 #5D73E9

Accessibility & contrast

On white

9.90

#1830B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1830B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1830B4

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1830B4	#FFFFFF	#000000	##FFFFFF
##1830B4	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB8

Deuteranopia (green-blind)

#003BB2

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1830b4;
/* rgb */ color: rgb(24, 48, 180);
/* oklch */ color: oklch(40.0% 0.206 266.7);

Tailwind

colors: {
  custom: {
    50: '#7669cc',
    500: '#1830b4',
    950: '#000000',
  },
}

SCSS

$custom: #1830b4;
$custom-light: #7669cc;
$custom-dark: #000000;

JSON

{
  "hex": "#1830b4",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 180
  },
  "hsl": {
    "h": 230.769,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.3998,
    "c": 0.20637,
    "h": 266.7
  },
  "luminance": 0.05603
}

Semantic roles & 50–950 ramp

primary

#1830B4

secondary

#CDBC5B

accent

#D635F3

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #1830B4

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

Preview Lab → · Contrast checker → · Palette generator →