#1B4D84#1B4D84

#1B4D84 is a dark, moderate cyan. Relative luminance 0.072; OKLCH L 41.7% C 0.106 H 253.5°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D84
RGB	rgb(27, 77, 132)
HSL	hsl(211, 66%, 31%)
HSV	hsv(211, 80%, 52%)
CMYK	cmyk(79.5%, 41.7%, 0%, 48.2%)
CIE-LAB	lab(32.27, 4.17, -35.60)
CIE-LCH	lch(32.27, 35.84, 276.68°)
OKLab	oklab(41.69% -0.0301 -0.1017)
OKLCH	oklch(41.69% 0.106 253.5)
XYZ	xyz(7.2692, 7.2059, 22.8331)
Luminance	0.0721 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D84 #84521B

analogous

#1B8184 #1B4D84 #1E1B84

triadic

#1B4D84 #841B4D #4D841B

tetradic

#1B4D84 #841B81 #84521B #1B841E

square

#1B4D84 #841B81 #84521B #1B841E

split-complementary

#1B4D84 #841E1B #81841B

monochromatic

#06121E #112F51 #1B4D84 #256BB7 #4189D8

Accessibility & contrast

On white

8.60

#1B4D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#1B4D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D84

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D84	#FFFFFF	#000000	##FFFFFF
##1B4D84	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#335186

Deuteranopia (green-blind)

#214883

Tritanopia (blue-blind)

#005A62

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4d84;
/* rgb */ color: rgb(27, 77, 132);
/* oklch */ color: oklch(41.7% 0.106 253.5);

Tailwind

colors: {
  custom: {
    50: '#687ea8',
    500: '#1b4d84',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d84;
$custom-light: #687ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d84",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 132
  },
  "hsl": {
    "h": 211.429,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.4169,
    "c": 0.10607,
    "h": 253.5
  },
  "luminance": 0.07207
}

Semantic roles & 50–950 ramp

primary

#1B4D84

secondary

#B78043

accent

#983FE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4D84

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

Preview Lab → · Contrast checker → · Palette generator →