#1838B4#1838B4

#1838B4 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.3% C 0.198 H 265.8°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#1838B4
RGB	rgb(24, 56, 180)
HSL	hsl(228, 76%, 40%)
HSV	hsv(228, 87%, 71%)
CMYK	cmyk(86.7%, 68.9%, 0%, 29.4%)
CIE-LAB	lab(30.20, 37.12, -68.06)
CIE-LCH	lch(30.20, 77.52, 298.61°)
OKLab	oklab(41.29% -0.0145 -0.1973)
OKLCH	oklch(41.29% 0.198 265.8)
XYZ	xyz(10.0262, 6.3166, 43.8619)
Luminance	0.0632 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1838B4 #B49418

analogous

#1886B4 #1838B4 #4618B4

triadic

#1838B4 #B41838 #38B418

tetradic

#1838B4 #B41886 #B49418 #18B446

square

#1838B4 #B41886 #B49418 #18B446

split-complementary

#1838B4 #B44618 #86B418

monochromatic

#0A1648 #11277E #1838B4 #274DE2 #5D7AE9

Accessibility & contrast

On white

9.28

#1838B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1838B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1838B4

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1838B4	#FFFFFF	#000000	##FFFFFF
##1838B4	1.00	9.28	2.26	9.28
#FFFFFF	9.28	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB8

Deuteranopia (green-blind)

#0040B2

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1838b4;
/* rgb */ color: rgb(24, 56, 180);
/* oklch */ color: oklch(41.3% 0.198 265.8);

Tailwind

colors: {
  custom: {
    50: '#756ecc',
    500: '#1838b4',
    950: '#000000',
  },
}

SCSS

$custom: #1838b4;
$custom-light: #756ecc;
$custom-dark: #000000;

JSON

{
  "hex": "#1838b4",
  "rgb": {
    "r": 24,
    "g": 56,
    "b": 180
  },
  "hsl": {
    "h": 227.692,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.4129,
    "c": 0.19786,
    "h": 265.8
  },
  "luminance": 0.06318
}

Semantic roles & 50–950 ramp

primary

#1838B4

secondary

#CDB65B

accent

#CC35F3

background

#F7F6FC

surface

#EEECF9

border

#C9C7D2

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1838B4

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

Preview Lab → · Contrast checker → · Palette generator →