#1C4B83#1C4B83

#1C4B83 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 41.2% C 0.107 H 254.9°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#1C4B83
RGB	rgb(28, 75, 131)
HSL	hsl(213, 65%, 31%)
HSV	hsv(213, 79%, 51%)
CMYK	cmyk(78.6%, 42.7%, 0%, 48.6%)
CIE-LAB	lab(31.62, 5.23, -36.02)
CIE-LCH	lch(31.62, 36.40, 278.27°)
OKLab	oklab(41.17% -0.0278 -0.103)
OKLCH	oklch(41.17% 0.107 254.9)
XYZ	xyz(7.0902, 6.9169, 22.4297)
Luminance	0.0692 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4B83 #83541C

analogous

#1C7E83 #1C4B83 #201C83

triadic

#1C4B83 #831C4B #4B831C

tetradic

#1C4B83 #831C7E #83541C #1C8320

square

#1C4B83 #831C7E #83541C #1C8320

split-complementary

#1C4B83 #83201C #7E831C

monochromatic

#06111E #112E51 #1C4B83 #2768B5 #4386D7

Accessibility & contrast

On white

8.81

#1C4B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1C4B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4B83

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4B83	#FFFFFF	#000000	##FFFFFF
##1C4B83	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304F85

Deuteranopia (green-blind)

#1E4682

Tritanopia (blue-blind)

#005860

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1c4b83;
/* rgb */ color: rgb(28, 75, 131);
/* oklch */ color: oklch(41.2% 0.107 254.9);

Tailwind

colors: {
  custom: {
    50: '#687ca7',
    500: '#1c4b83',
    950: '#000000',
  },
}

SCSS

$custom: #1c4b83;
$custom-light: #687ca7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4b83",
  "rgb": {
    "r": 28,
    "g": 75,
    "b": 131
  },
  "hsl": {
    "h": 212.621,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.4117,
    "c": 0.10667,
    "h": 254.9
  },
  "luminance": 0.06918
}

Semantic roles & 50–950 ramp

primary

#1C4B83

secondary

#B68245

accent

#9B40E8

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1C4B83

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

Preview Lab → · Contrast checker → · Palette generator →