#1C4B84#1C4B84

#1C4B84 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 41.2% C 0.108 H 255.2°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#1C4B84
RGB	rgb(28, 75, 132)
HSL	hsl(213, 65%, 31%)
HSV	hsv(213, 79%, 52%)
CMYK	cmyk(78.8%, 43.2%, 0%, 48.2%)
CIE-LAB	lab(31.68, 5.64, -36.54)
CIE-LCH	lch(31.68, 36.97, 278.77°)
OKLab	oklab(41.24% -0.0276 -0.1045)
OKLCH	oklch(41.24% 0.108 255.2)
XYZ	xyz(7.1583, 6.9441, 22.7884)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4B84 #84551C

analogous

#1C7F84 #1C4B84 #211C84

triadic

#1C4B84 #841C4B #4B841C

tetradic

#1C4B84 #841C7F #84551C #1C8421

square

#1C4B84 #841C7F #84551C #1C8421

split-complementary

#1C4B84 #84211C #7F841C

monochromatic

#07121F #112E52 #1C4B84 #2768B6 #4386D7

Accessibility & contrast

On white

8.79

#1C4B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1C4B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4B84

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4B84	#FFFFFF	#000000	##FFFFFF
##1C4B84	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5086

Deuteranopia (green-blind)

#1D4683

Tritanopia (blue-blind)

#005861

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1c4b84;
/* rgb */ color: rgb(28, 75, 132);
/* oklch */ color: oklch(41.2% 0.108 255.2);

Tailwind

colors: {
  custom: {
    50: '#687ca8',
    500: '#1c4b84',
    950: '#000000',
  },
}

SCSS

$custom: #1c4b84;
$custom-light: #687ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4b84",
  "rgb": {
    "r": 28,
    "g": 75,
    "b": 132
  },
  "hsl": {
    "h": 212.885,
    "s": 65,
    "l": 31.373
  },
  "oklch": {
    "l": 0.41238,
    "c": 0.10808,
    "h": 255.2
  },
  "luminance": 0.06945
}

Semantic roles & 50–950 ramp

primary

#1C4B84

secondary

#B78345

accent

#9C40E8

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1C4B84

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

Preview Lab → · Contrast checker → · Palette generator →