#1B4C8B#1B4C8B

#1B4C8B is a dark, moderate cyan. Relative luminance 0.073; OKLCH L 41.9% C 0.117 H 256.4°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#1B4C8B
RGB	rgb(27, 76, 139)
HSL	hsl(214, 67%, 33%)
HSV	hsv(214, 81%, 55%)
CMYK	cmyk(80.6%, 45.3%, 0%, 45.5%)
CIE-LAB	lab(32.40, 7.67, -39.69)
CIE-LCH	lch(32.40, 40.43, 280.93°)
OKLab	oklab(41.94% -0.0276 -0.1138)
OKLCH	oklch(41.94% 0.117 256.4)
XYZ	xyz(7.6949, 7.2651, 25.4178)
Luminance	0.0727 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4C8B #8B5A1B

analogous

#1B848B #1B4C8B #221B8B

triadic

#1B4C8B #8B1B4C #4C8B1B

tetradic

#1B4C8B #8B1B84 #8B5A1B #1B8B22

square

#1B4C8B #8B1B84 #8B5A1B #1B8B22

split-complementary

#1B4C8B #8B221B #848B1B

monochromatic

#071425 #113058 #1B4C8B #2568BE #4587DB

Accessibility & contrast

On white

8.56

#1B4C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1B4C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4C8B

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4C8B	#FFFFFF	#000000	##FFFFFF
##1B4C8B	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C528D

Deuteranopia (green-blind)

#15488A

Tritanopia (blue-blind)

#005B64

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4c8b;
/* rgb */ color: rgb(27, 76, 139);
/* oklch */ color: oklch(41.9% 0.117 256.4);

Tailwind

colors: {
  custom: {
    50: '#6a7dad',
    500: '#1b4c8b',
    950: '#000000',
  },
}

SCSS

$custom: #1b4c8b;
$custom-light: #6a7dad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4c8b",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 139
  },
  "hsl": {
    "h": 213.75,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.41935,
    "c": 0.11707,
    "h": 256.4
  },
  "luminance": 0.07266
}

Semantic roles & 50–950 ramp

primary

#1B4C8B

secondary

#BC8845

accent

#9F3DEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4C8B

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

Preview Lab → · Contrast checker → · Palette generator →