#1F597D#1F597D

#1F597D is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.4% C 0.084 H 240.0°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F597D
RGB	rgb(31, 89, 125)
HSL	hsl(203, 60%, 31%)
HSV	hsv(203, 75%, 49%)
CMYK	cmyk(75.2%, 28.8%, 0%, 51%)
CIE-LAB	lab(35.82, -5.74, -25.66)
CIE-LCH	lch(35.82, 26.30, 257.40°)
OKLab	oklab(44.39% -0.0418 -0.0725)
OKLCH	oklch(44.39% 0.084 240)
XYZ	xyz(7.8377, 8.9158, 20.7059)
Luminance	0.0892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F597D #7D431F

analogous

#1F7D72 #1F597D #1F2A7D

triadic

#1F597D #7D1F59 #597D1F

tetradic

#1F597D #721F7D #7D431F #2A7D1F

square

#1F597D #721F7D #7D431F #2A7D1F

split-complementary

#1F597D #7D1F2A #7D721F

monochromatic

#07131B #13364C #1F597D #2B7CAE #459CD1

Accessibility & contrast

On white

7.54

#1F597D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#1F597D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F597D

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F597D	#FFFFFF	#000000	##FFFFFF
##1F597D	1.00	7.54	2.78	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48597F

Deuteranopia (green-blind)

#3B507C

Tritanopia (blue-blind)

#006265

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1f597d;
/* rgb */ color: rgb(31, 89, 125);
/* oklch */ color: oklch(44.4% 0.084 240.0);

Tailwind

colors: {
  custom: {
    50: '#6887a3',
    500: '#1f597d',
    950: '#000000',
  },
}

SCSS

$custom: #1f597d;
$custom-light: #6887a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f597d",
  "rgb": {
    "r": 31,
    "g": 89,
    "b": 125
  },
  "hsl": {
    "h": 202.979,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.44391,
    "c": 0.08367,
    "h": 240
  },
  "luminance": 0.08917
}

Semantic roles & 50–950 ramp

primary

#1F597D

secondary

#B07048

accent

#8144E3

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1F597D

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

Preview Lab → · Contrast checker → · Palette generator →