#1B4E8C#1B4E8C

#1B4E8C is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.5% C 0.116 H 255.5°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E8C
RGB	rgb(27, 78, 140)
HSL	hsl(213, 68%, 33%)
HSV	hsv(213, 81%, 55%)
CMYK	cmyk(80.7%, 44.3%, 0%, 45.1%)
CIE-LAB	lab(33.08, 6.73, -39.22)
CIE-LCH	lch(33.08, 39.79, 279.74°)
OKLab	oklab(42.48% -0.0291 -0.1123)
OKLCH	oklch(42.48% 0.116 255.5)
XYZ	xyz(7.9082, 7.5743, 25.8510)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E8C #8C591B

analogous

#1B878C #1B4E8C #201B8C

triadic

#1B4E8C #8C1B4E #4E8C1B

tetradic

#1B4E8C #8C1B87 #8C591B #1B8C20

square

#1B4E8C #8C1B87 #8C591B #1B8C20

split-complementary

#1B4E8C #8C201B #878C1B

monochromatic

#071525 #113159 #1B4E8C #256BBF #4689DB

Accessibility & contrast

On white

8.35

#1B4E8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B4E8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E8C

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E8C	#FFFFFF	#000000	##FFFFFF
##1B4E8C	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F538E

Deuteranopia (green-blind)

#19498B

Tritanopia (blue-blind)

#005D66

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b4e8c;
/* rgb */ color: rgb(27, 78, 140);
/* oklch */ color: oklch(42.5% 0.116 255.5);

Tailwind

colors: {
  custom: {
    50: '#6a7fae',
    500: '#1b4e8c',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e8c;
$custom-light: #6a7fae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e8c",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 140
  },
  "hsl": {
    "h": 212.92,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.42481,
    "c": 0.11606,
    "h": 255.5
  },
  "luminance": 0.07575
}

Semantic roles & 50–950 ramp

primary

#1B4E8C

secondary

#BD8746

accent

#9C3DEB

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B4E8C

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

Preview Lab → · Contrast checker → · Palette generator →