#1B487F#1B487F

#1B487F is a dark, moderate cyan. Relative luminance 0.064; OKLCH L 40.1% C 0.105 H 255.3°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#1B487F
RGB	rgb(27, 72, 127)
HSL	hsl(213, 65%, 30%)
HSV	hsv(213, 79%, 50%)
CMYK	cmyk(78.7%, 43.3%, 0%, 50.2%)
CIE-LAB	lab(30.40, 5.51, -35.49)
CIE-LCH	lch(30.40, 35.91, 278.82°)
OKLab	oklab(40.13% -0.0266 -0.1015)
OKLCH	oklch(40.13% 0.105 255.3)
XYZ	xyz(6.5987, 6.3993, 20.9620)
Luminance	0.0640 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B487F #7F521B

analogous

#1B7A7F #1B487F #201B7F

triadic

#1B487F #7F1B48 #487F1B

tetradic

#1B487F #7F1B7A #7F521B #1B7F20

square

#1B487F #7F1B7A #7F521B #1B7F20

split-complementary

#1B487F #7F201B #7A7F1B

monochromatic

#060F1A #102B4D #1B487F #2665B1 #3E83D6

Accessibility & contrast

On white

9.21

#1B487F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1B487F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B487F

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B487F	#FFFFFF	#000000	##FFFFFF
##1B487F	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4D81

Deuteranopia (green-blind)

#1C437E

Tritanopia (blue-blind)

#00555D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b487f;
/* rgb */ color: rgb(27, 72, 127);
/* oklch */ color: oklch(40.1% 0.105 255.3);

Tailwind

colors: {
  custom: {
    50: '#677aa4',
    500: '#1b487f',
    950: '#000000',
  },
}

SCSS

$custom: #1b487f;
$custom-light: #677aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b487f",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 127
  },
  "hsl": {
    "h": 213,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.40132,
    "c": 0.10491,
    "h": 255.3
  },
  "luminance": 0.064
}

Semantic roles & 50–950 ramp

primary

#1B487F

secondary

#B38043

accent

#9C40E8

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B487F

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

Preview Lab → · Contrast checker → · Palette generator →