#1F5B71#1F5B71

#1F5B71 is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.3% C 0.070 H 226.2°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F5B71
RGB	rgb(31, 91, 113)
HSL	hsl(196, 57%, 28%)
HSV	hsv(196, 73%, 44%)
CMYK	cmyk(72.6%, 19.5%, 0%, 55.7%)
CIE-LAB	lab(35.92, -11.38, -18.11)
CIE-LCH	lch(35.92, 21.39, 237.85°)
OKLab	oklab(44.28% -0.0486 -0.0507)
OKLCH	oklch(44.28% 0.07 226.2)
XYZ	xyz(7.2856, 8.9649, 16.9660)
Luminance	0.0897 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5B71 #71351F

analogous

#1F715E #1F5B71 #1F3271

triadic

#1F5B71 #711F5B #5B711F

tetradic

#1F5B71 #5E1F71 #71351F #32711F

square

#1F5B71 #5E1F71 #71351F #32711F

split-complementary

#1F5B71 #711F32 #715E1F

monochromatic

#071318 #123441 #1F5B71 #2C82A1 #40A5CB

Accessibility & contrast

On white

7.52

#1F5B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#1F5B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5B71

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5B71	#FFFFFF	#000000	##FFFFFF
##1F5B71	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F5972

Deuteranopia (green-blind)

#445171

Tritanopia (blue-blind)

#006162

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1f5b71;
/* rgb */ color: rgb(31, 91, 113);
/* oklch */ color: oklch(44.3% 0.070 226.2);

Tailwind

colors: {
  custom: {
    50: '#66899a',
    500: '#1f5b71',
    950: '#000000',
  },
}

SCSS

$custom: #1f5b71;
$custom-light: #66899a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5b71",
  "rgb": {
    "r": 31,
    "g": 91,
    "b": 113
  },
  "hsl": {
    "h": 196.098,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.44282,
    "c": 0.07022,
    "h": 226.2
  },
  "luminance": 0.08966
}

Semantic roles & 50–950 ramp

primary

#1F5B71

secondary

#A56047

accent

#7148E0

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060B0E

muted

#7A7C7E

Preview Lab

Preview with #1F5B71

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

Preview Lab → · Contrast checker → · Palette generator →