#1B487B#1B487B

#1B487B is a dark, moderate cyan. Relative luminance 0.063; OKLCH L 39.9% C 0.099 H 253.9°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#1B487B
RGB	rgb(27, 72, 123)
HSL	hsl(212, 64%, 29%)
HSV	hsv(212, 78%, 48%)
CMYK	cmyk(78%, 41.5%, 0%, 51.8%)
CIE-LAB	lab(30.15, 3.89, -33.39)
CIE-LCH	lch(30.15, 33.61, 276.64°)
OKLab	oklab(39.86% -0.0276 -0.0953)
OKLCH	oklch(39.86% 0.099 253.9)
XYZ	xyz(6.3432, 6.2971, 19.6162)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B487B #7B4E1B

analogous

#1B787B #1B487B #1E1B7B

triadic

#1B487B #7B1B48 #487B1B

tetradic

#1B487B #7B1B78 #7B4E1B #1B7B1E

square

#1B487B #7B1B78 #7B4E1B #1B7B1E

split-complementary

#1B487B #7B1E1B #787B1B

monochromatic

#060F19 #102B49 #1B487B #2665AD #3C83D4

Accessibility & contrast

On white

9.29

#1B487B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1B487B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B487B

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B487B	#FFFFFF	#000000	##FFFFFF
##1B487B	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304C7D

Deuteranopia (green-blind)

#20437A

Tritanopia (blue-blind)

#00545B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b487b;
/* rgb */ color: rgb(27, 72, 123);
/* oklch */ color: oklch(39.9% 0.099 253.9);

Tailwind

colors: {
  custom: {
    50: '#667aa1',
    500: '#1b487b',
    950: '#000000',
  },
}

SCSS

$custom: #1b487b;
$custom-light: #667aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b487b",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 123
  },
  "hsl": {
    "h": 211.875,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.39858,
    "c": 0.09923,
    "h": 253.9
  },
  "luminance": 0.06298
}

Semantic roles & 50–950 ramp

primary

#1B487B

secondary

#AF7C43

accent

#9941E7

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#07090F

muted

#7A7B7E

Preview Lab

Preview with #1B487B

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

Preview Lab → · Contrast checker → · Palette generator →