#1B5175#1B5175

#1B5175 is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 41.8% C 0.082 H 242.0°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B5175
RGB	rgb(27, 81, 117)
HSL	hsl(204, 63%, 28%)
HSV	hsv(204, 77%, 46%)
CMYK	cmyk(76.9%, 30.8%, 0%, 54.1%)
CIE-LAB	lab(32.70, -4.38, -25.60)
CIE-LCH	lch(32.70, 25.97, 260.30°)
OKLab	oklab(41.75% -0.0385 -0.0724)
OKLCH	oklch(41.75% 0.082 242)
XYZ	xyz(6.6041, 7.4015, 17.9067)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5175 #753F1B

analogous

#1B756C #1B5175 #1B2475

triadic

#1B5175 #751B51 #51751B

tetradic

#1B5175 #6C1B75 #753F1B #24751B

square

#1B5175 #6C1B75 #753F1B #24751B

split-complementary

#1B5175 #751B24 #756C1B

monochromatic

#061119 #102F43 #1B5175 #2673A7 #3994D1

Accessibility & contrast

On white

8.47

#1B5175 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1B5175 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5175

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5175	#FFFFFF	#000000	##FFFFFF
##1B5175	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#405277

Deuteranopia (green-blind)

#344974

Tritanopia (blue-blind)

#005A5E

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b5175;
/* rgb */ color: rgb(27, 81, 117);
/* oklch */ color: oklch(41.8% 0.082 242.0);

Tailwind

colors: {
  custom: {
    50: '#65819d',
    500: '#1b5175',
    950: '#000000',
  },
}

SCSS

$custom: #1b5175;
$custom-light: #65819d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5175",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 117
  },
  "hsl": {
    "h": 204,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.41754,
    "c": 0.08203,
    "h": 242
  },
  "luminance": 0.07402
}

Semantic roles & 50–950 ramp

primary

#1B5175

secondary

#A96C42

accent

#8442E6

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B5175

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

Preview Lab → · Contrast checker → · Palette generator →