#1C4591#1C4591

#1C4591 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.8% C 0.134 H 261.4°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#1C4591
RGB	rgb(28, 69, 145)
HSL	hsl(219, 68%, 34%)
HSV	hsv(219, 81%, 57%)
CMYK	cmyk(80.7%, 52.4%, 0%, 43.1%)
CIE-LAB	lab(30.75, 14.98, -46.03)
CIE-LCH	lch(30.75, 48.41, 288.03°)
OKLab	oklab(40.81% -0.0201 -0.1325)
OKLCH	oklch(40.81% 0.134 261.4)
XYZ	xyz(7.7160, 6.5465, 27.6395)
Luminance	0.0655 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4591 #91681C

analogous

#1C8091 #1C4591 #2D1C91

triadic

#1C4591 #911C45 #45911C

tetradic

#1C4591 #911C80 #91681C #1C912D

square

#1C4591 #911C80 #91681C #1C912D

split-complementary

#1C4591 #912D1C #80911C

monochromatic

#08142A #122D5E #1C4591 #265DC4 #4B7EDC

Accessibility & contrast

On white

9.09

#1C4591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1C4591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4591

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4591	#FFFFFF	#000000	##FFFFFF
##1C4591	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134E94

Deuteranopia (green-blind)

#00438F

Tritanopia (blue-blind)

#005764

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1c4591;
/* rgb */ color: rgb(28, 69, 145);
/* oklch */ color: oklch(40.8% 0.134 261.4);

Tailwind

colors: {
  custom: {
    50: '#6c78b2',
    500: '#1c4591',
    950: '#000000',
  },
}

SCSS

$custom: #1c4591;
$custom-light: #6c78b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4591",
  "rgb": {
    "r": 28,
    "g": 69,
    "b": 145
  },
  "hsl": {
    "h": 218.974,
    "s": 67.63,
    "l": 33.922
  },
  "oklch": {
    "l": 0.40807,
    "c": 0.13406,
    "h": 261.4
  },
  "luminance": 0.06547
}

Semantic roles & 50–950 ramp

primary

#1C4591

secondary

#BE964A

accent

#AE3DEB

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1C4591

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

Preview Lab → · Contrast checker → · Palette generator →