#1B5071#1B5071

#1B5071 is a dark, moderate cyan. Relative luminance 0.072; OKLCH L 41.3% C 0.078 H 240.1°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#1B5071
RGB	rgb(27, 80, 113)
HSL	hsl(203, 61%, 27%)
HSV	hsv(203, 76%, 44%)
CMYK	cmyk(76.1%, 29.2%, 0%, 55.7%)
CIE-LAB	lab(32.17, -5.29, -23.94)
CIE-LCH	lch(32.17, 24.51, 257.54°)
OKLab	oklab(41.27% -0.0389 -0.0676)
OKLCH	oklch(41.27% 0.078 240.1)
XYZ	xyz(6.3001, 7.1619, 16.6699)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5071 #713C1B

analogous

#1B7167 #1B5071 #1B2571

triadic

#1B5071 #711B50 #50711B

tetradic

#1B5071 #671B71 #713C1B #25711B

square

#1B5071 #671B71 #713C1B #25711B

split-complementary

#1B5071 #711B25 #71671B

monochromatic

#061119 #0F2D40 #1B5071 #2773A2 #3795CF

Accessibility & contrast

On white

8.63

#1B5071 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1B5071 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5071

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5071	#FFFFFF	#000000	##FFFFFF
##1B5071	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415072

Deuteranopia (green-blind)

#354870

Tritanopia (blue-blind)

#00585B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b5071;
/* rgb */ color: rgb(27, 80, 113);
/* oklch */ color: oklch(41.3% 0.078 240.1);

Tailwind

colors: {
  custom: {
    50: '#64819a',
    500: '#1b5071',
    950: '#000000',
  },
}

SCSS

$custom: #1b5071;
$custom-light: #64819a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5071",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 113
  },
  "hsl": {
    "h": 203.023,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.41266,
    "c": 0.07797,
    "h": 240.1
  },
  "luminance": 0.07163
}

Semantic roles & 50–950 ramp

primary

#1B5071

secondary

#A66842

accent

#8143E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B5071

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

Preview Lab → · Contrast checker → · Palette generator →