#1B477B#1B477B

#1B477B is a dark, moderate cyan. Relative luminance 0.062; OKLCH L 39.6% C 0.100 H 254.6°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B477B
RGB	rgb(27, 71, 123)
HSL	hsl(213, 64%, 29%)
HSV	hsv(213, 78%, 48%)
CMYK	cmyk(78%, 42.3%, 0%, 51.8%)
CIE-LAB	lab(29.83, 4.56, -33.89)
CIE-LCH	lch(29.83, 34.20, 277.67°)
OKLab	oklab(39.61% -0.0266 -0.0968)
OKLCH	oklch(39.61% 0.1 254.6)
XYZ	xyz(6.2791, 6.1688, 19.5948)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B477B #7B4F1B

analogous

#1B777B #1B477B #1F1B7B

triadic

#1B477B #7B1B47 #477B1B

tetradic

#1B477B #7B1B77 #7B4F1B #1B7B1F

square

#1B477B #7B1B77 #7B4F1B #1B7B1F

split-complementary

#1B477B #7B1F1B #777B1B

monochromatic

#060E19 #102A49 #1B477B #2664AD #3C82D4

Accessibility & contrast

On white

9.40

#1B477B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1B477B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B477B

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B477B	#FFFFFF	#000000	##FFFFFF
##1B477B	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4B7D

Deuteranopia (green-blind)

#1E427A

Tritanopia (blue-blind)

#00535B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b477b;
/* rgb */ color: rgb(27, 71, 123);
/* oklch */ color: oklch(39.6% 0.100 254.6);

Tailwind

colors: {
  custom: {
    50: '#6679a1',
    500: '#1b477b',
    950: '#000000',
  },
}

SCSS

$custom: #1b477b;
$custom-light: #6679a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b477b",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 123
  },
  "hsl": {
    "h": 212.5,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.39612,
    "c": 0.10041,
    "h": 254.6
  },
  "luminance": 0.0617
}

Semantic roles & 50–950 ramp

primary

#1B477B

secondary

#AF7D43

accent

#9B41E7

background

#F6F7FA

surface

#EBEDF3

border

#C6C8CD

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B477B

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

Preview Lab → · Contrast checker → · Palette generator →