#1B4B8B#1B4B8B

#1B4B8B is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.7% C 0.118 H 256.9°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B8B
RGB	rgb(27, 75, 139)
HSL	hsl(214, 67%, 33%)
HSV	hsv(214, 81%, 55%)
CMYK	cmyk(80.6%, 46%, 0%, 45.5%)
CIE-LAB	lab(32.10, 8.34, -40.18)
CIE-LCH	lch(32.10, 41.04, 281.73°)
OKLab	oklab(41.7% -0.0267 -0.1152)
OKLCH	oklch(41.7% 0.118 256.9)
XYZ	xyz(7.6266, 7.1283, 25.3950)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B8B #8B5B1B

analogous

#1B838B #1B4B8B #231B8B

triadic

#1B4B8B #8B1B4B #4B8B1B

tetradic

#1B4B8B #8B1B83 #8B5B1B #1B8B23

square

#1B4B8B #8B1B83 #8B5B1B #1B8B23

split-complementary

#1B4B8B #8B231B #838B1B

monochromatic

#071425 #112F58 #1B4B8B #2567BE #4586DB

Accessibility & contrast

On white

8.66

#1B4B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1B4B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B8B

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B8B	#FFFFFF	#000000	##FFFFFF
##1B4B8B	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A518D

Deuteranopia (green-blind)

#11478A

Tritanopia (blue-blind)

#005A64

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4b8b;
/* rgb */ color: rgb(27, 75, 139);
/* oklch */ color: oklch(41.7% 0.118 256.9);

Tailwind

colors: {
  custom: {
    50: '#6a7cad',
    500: '#1b4b8b',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b8b;
$custom-light: #6a7cad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b8b",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 139
  },
  "hsl": {
    "h": 214.286,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.41699,
    "c": 0.11829,
    "h": 256.9
  },
  "luminance": 0.07129
}

Semantic roles & 50–950 ramp

primary

#1B4B8B

secondary

#BC8945

accent

#A03DEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4B8B

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

Preview Lab → · Contrast checker → · Palette generator →