#1F507D#1F507D

#1F507D is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.1% C 0.092 H 249.3°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#1F507D
RGB	rgb(31, 80, 125)
HSL	hsl(209, 60%, 31%)
HSV	hsv(209, 75%, 49%)
CMYK	cmyk(75.2%, 36%, 0%, 51%)
CIE-LAB	lab(32.94, -0.03, -30.20)
CIE-LCH	lch(32.94, 30.20, 269.95°)
OKLab	oklab(42.12% -0.0324 -0.0858)
OKLCH	oklch(42.12% 0.092 249.3)
XYZ	xyz(7.1340, 7.5085, 20.4714)
Luminance	0.0751 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F507D #7D4C1F

analogous

#1F7D7B #1F507D #1F217D

triadic

#1F507D #7D1F50 #507D1F

tetradic

#1F507D #7B1F7D #7D4C1F #217D1F

square

#1F507D #7B1F7D #7D4C1F #217D1F

split-complementary

#1F507D #7D1F21 #7D7B1F

monochromatic

#07111B #13314C #1F507D #2B6FAE #458ED1

Accessibility & contrast

On white

8.39

#1F507D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1F507D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F507D

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F507D	#FFFFFF	#000000	##FFFFFF
##1F507D	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C527F

Deuteranopia (green-blind)

#2E497C

Tritanopia (blue-blind)

#005B60

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f507d;
/* rgb */ color: rgb(31, 80, 125);
/* oklch */ color: oklch(42.1% 0.092 249.3);

Tailwind

colors: {
  custom: {
    50: '#6880a3',
    500: '#1f507d',
    950: '#000000',
  },
}

SCSS

$custom: #1f507d;
$custom-light: #6880a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f507d",
  "rgb": {
    "r": 31,
    "g": 80,
    "b": 125
  },
  "hsl": {
    "h": 208.723,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.42115,
    "c": 0.09172,
    "h": 249.3
  },
  "luminance": 0.07509
}

Semantic roles & 50–950 ramp

primary

#1F507D

secondary

#B07A48

accent

#9144E3

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F507D

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

Preview Lab → · Contrast checker → · Palette generator →