#1B4E8D#1B4E8D

#1B4E8D is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.6% C 0.117 H 255.7°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E8D
RGB	rgb(27, 78, 141)
HSL	hsl(213, 68%, 33%)
HSV	hsv(213, 81%, 55%)
CMYK	cmyk(80.9%, 44.7%, 0%, 44.7%)
CIE-LAB	lab(33.14, 7.13, -39.73)
CIE-LCH	lch(33.14, 40.37, 280.18°)
OKLab	oklab(42.55% -0.0289 -0.1138)
OKLCH	oklch(42.55% 0.117 255.7)
XYZ	xyz(7.9823, 7.6039, 26.2411)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E8D #8D5A1B

analogous

#1B878D #1B4E8D #211B8D

triadic

#1B4E8D #8D1B4E #4E8D1B

tetradic

#1B4E8D #8D1B87 #8D5A1B #1B8D21

square

#1B4E8D #8D1B87 #8D5A1B #1B8D21

split-complementary

#1B4E8D #8D211B #878D1B

monochromatic

#071526 #11325A #1B4E8D #256AC0 #4789DC

Accessibility & contrast

On white

8.33

#1B4E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1B4E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E8D

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E8D	#FFFFFF	#000000	##FFFFFF
##1B4E8D	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E548F

Deuteranopia (green-blind)

#18498C

Tritanopia (blue-blind)

#005D66

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b4e8d;
/* rgb */ color: rgb(27, 78, 141);
/* oklch */ color: oklch(42.6% 0.117 255.7);

Tailwind

colors: {
  custom: {
    50: '#6a7faf',
    500: '#1b4e8d',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e8d;
$custom-light: #6a7faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e8d",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 141
  },
  "hsl": {
    "h": 213.158,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.42551,
    "c": 0.11746,
    "h": 255.7
  },
  "luminance": 0.07605
}

Semantic roles & 50–950 ramp

primary

#1B4E8D

secondary

#BD8846

accent

#9D3DEB

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1B4E8D

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

Preview Lab → · Contrast checker → · Palette generator →