#1B4863#1B4863

#1B4863 is a dark, moderate cyan. Relative luminance 0.058; OKLCH L 38.4% C 0.067 H 238.4°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B4863
RGB	rgb(27, 72, 99)
HSL	hsl(203, 57%, 25%)
HSV	hsv(203, 73%, 39%)
CMYK	cmyk(72.7%, 27.3%, 0%, 61.2%)
CIE-LAB	lab(28.82, -5.58, -20.32)
CIE-LCH	lch(28.82, 21.07, 254.63°)
OKLab	oklab(38.38% -0.0351 -0.0572)
OKLCH	oklch(38.38% 0.067 238.4)
XYZ	xyz(5.0206, 5.7681, 12.6507)
Luminance	0.0577 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4863 #63361B

analogous

#1B635A #1B4863 #1B2463

triadic

#1B4863 #631B48 #48631B

tetradic

#1B4863 #5A1B63 #63361B #24631B

square

#1B4863 #5A1B63 #63361B #24631B

split-complementary

#1B4863 #631B24 #635A1B

monochromatic

#071118 #0E2533 #1B4863 #286B93 #358EC3

Accessibility & contrast

On white

9.75

#1B4863 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1B4863 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4863

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4863	#FFFFFF	#000000	##FFFFFF
##1B4863	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B4864

Deuteranopia (green-blind)

#324163

Tritanopia (blue-blind)

#004F51

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b4863;
/* rgb */ color: rgb(27, 72, 99);
/* oklch */ color: oklch(38.4% 0.067 238.4);

Tailwind

colors: {
  custom: {
    50: '#617a8f',
    500: '#1b4863',
    950: '#000000',
  },
}

SCSS

$custom: #1b4863;
$custom-light: #617a8f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4863",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 99
  },
  "hsl": {
    "h": 202.5,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.38377,
    "c": 0.06711,
    "h": 238.4
  },
  "luminance": 0.05769
}

Semantic roles & 50–950 ramp

primary

#1B4863

secondary

#986241

accent

#8147E0

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05090C

muted

#7A7B7D

Preview Lab

Preview with #1B4863

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

Preview Lab → · Contrast checker → · Palette generator →