#1B4D85#1B4D85

#1B4D85 is a dark, moderate cyan. Relative luminance 0.072; OKLCH L 41.8% C 0.107 H 253.9°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D85
RGB	rgb(27, 77, 133)
HSL	hsl(212, 66%, 31%)
HSV	hsv(212, 80%, 52%)
CMYK	cmyk(79.7%, 42.1%, 0%, 47.8%)
CIE-LAB	lab(32.33, 4.57, -36.12)
CIE-LCH	lch(32.33, 36.40, 277.22°)
OKLab	oklab(41.76% -0.0298 -0.1032)
OKLCH	oklch(41.76% 0.107 253.9)
XYZ	xyz(7.3379, 7.2334, 23.1952)
Luminance	0.0723 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D85 #85531B

analogous

#1B8285 #1B4D85 #1E1B85

triadic

#1B4D85 #851B4D #4D851B

tetradic

#1B4D85 #851B82 #85531B #1B851E

square

#1B4D85 #851B82 #85531B #1B851E

split-complementary

#1B4D85 #851E1B #82851B

monochromatic

#06121F #113052 #1B4D85 #256AB8 #4289D9

Accessibility & contrast

On white

8.58

#1B4D85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1B4D85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D85

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D85	#FFFFFF	#000000	##FFFFFF
##1B4D85	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#325187

Deuteranopia (green-blind)

#204884

Tritanopia (blue-blind)

#005A62

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4d85;
/* rgb */ color: rgb(27, 77, 133);
/* oklch */ color: oklch(41.8% 0.107 253.9);

Tailwind

colors: {
  custom: {
    50: '#687ea9',
    500: '#1b4d85',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d85;
$custom-light: #687ea9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d85",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 133
  },
  "hsl": {
    "h": 211.698,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.41758,
    "c": 0.10746,
    "h": 253.9
  },
  "luminance": 0.07234
}

Semantic roles & 50–950 ramp

primary

#1B4D85

secondary

#B88144

accent

#993FE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4D85

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

Preview Lab → · Contrast checker → · Palette generator →