#1B487E#1B487E

#1B487E is a dark, moderate cyan. Relative luminance 0.064; OKLCH L 40.1% C 0.103 H 255.0°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B487E
RGB	rgb(27, 72, 126)
HSL	hsl(213, 65%, 30%)
HSV	hsv(213, 79%, 49%)
CMYK	cmyk(78.6%, 42.9%, 0%, 50.6%)
CIE-LAB	lab(30.34, 5.10, -34.96)
CIE-LCH	lch(30.34, 35.33, 278.30°)
OKLab	oklab(40.06% -0.0268 -0.0999)
OKLCH	oklch(40.06% 0.103 255)
XYZ	xyz(6.5339, 6.3733, 20.6204)
Luminance	0.0637 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B487E #7E511B

analogous

#1B7A7E #1B487E #1F1B7E

triadic

#1B487E #7E1B48 #487E1B

tetradic

#1B487E #7E1B7A #7E511B #1B7E1F

square

#1B487E #7E1B7A #7E511B #1B7E1F

split-complementary

#1B487E #7E1F1B #7A7E1B

monochromatic

#050E19 #102B4C #1B487E #2665B0 #3E83D6

Accessibility & contrast

On white

9.23

#1B487E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#1B487E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B487E

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B487E	#FFFFFF	#000000	##FFFFFF
##1B487E	1.00	9.23	2.27	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4C80

Deuteranopia (green-blind)

#1D437D

Tritanopia (blue-blind)

#00555D

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b487e;
/* rgb */ color: rgb(27, 72, 126);
/* oklch */ color: oklch(40.1% 0.103 255.0);

Tailwind

colors: {
  custom: {
    50: '#677aa4',
    500: '#1b487e',
    950: '#000000',
  },
}

SCSS

$custom: #1b487e;
$custom-light: #677aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b487e",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 126
  },
  "hsl": {
    "h": 212.727,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.40063,
    "c": 0.10349,
    "h": 255
  },
  "luminance": 0.06374
}

Semantic roles & 50–950 ramp

primary

#1B487E

secondary

#B27F43

accent

#9C40E8

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B487E

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

Preview Lab → · Contrast checker → · Palette generator →