#1F515F#1F515F

#1F515F is a dark, muted cyan. Relative luminance 0.070; OKLCH L 40.7% C 0.058 H 219.3°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#1F515F
RGB	rgb(31, 81, 95)
HSL	hsl(193, 51%, 25%)
HSV	hsv(193, 67%, 37%)
CMYK	cmyk(67.4%, 14.7%, 0%, 62.7%)
CIE-LAB	lab(31.81, -11.84, -13.14)
CIE-LCH	lch(31.81, 17.69, 227.97°)
OKLab	oklab(40.74% -0.0447 -0.0366)
OKLCH	oklch(40.74% 0.058 219.3)
XYZ	xyz(5.5722, 7.0018, 11.8821)
Luminance	0.0700 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F515F #5F2D1F

analogous

#1F5F4D #1F515F #1F315F

triadic

#1F515F #5F1F51 #515F1F

tetradic

#1F515F #4D1F5F #5F2D1F #315F1F

square

#1F515F #4D1F5F #5F2D1F #315F1F

split-complementary

#1F515F #5F1F31 #5F4D1F

monochromatic

#081417 #102A31 #1F515F #2E788D #3DA0BB

Accessibility & contrast

On white

8.75

#1F515F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1F515F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F515F

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F515F	#FFFFFF	#000000	##FFFFFF
##1F515F	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484F60

Deuteranopia (green-blind)

#3F485F

Tritanopia (blue-blind)

#005655

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f515f;
/* rgb */ color: rgb(31, 81, 95);
/* oklch */ color: oklch(40.7% 0.058 219.3);

Tailwind

colors: {
  custom: {
    50: '#63828c',
    500: '#1f515f',
    950: '#000000',
  },
}

SCSS

$custom: #1f515f;
$custom-light: #63828c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f515f",
  "rgb": {
    "r": 31,
    "g": 81,
    "b": 95
  },
  "hsl": {
    "h": 193.125,
    "s": 50.794,
    "l": 24.706
  },
  "oklch": {
    "l": 0.40743,
    "c": 0.05774,
    "h": 219.3
  },
  "luminance": 0.07002
}

Semantic roles & 50–950 ramp

primary

#1F515F

secondary

#945746

accent

#6C4EDA

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#060A0C

muted

#7A7C7D

Preview Lab

Preview with #1F515F

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

Preview Lab → · Contrast checker → · Palette generator →