#1F507B#1F507B

#1F507B is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.0% C 0.089 H 248.2°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F507B
RGB	rgb(31, 80, 123)
HSL	hsl(208, 60%, 30%)
HSV	hsv(208, 75%, 48%)
CMYK	cmyk(74.8%, 35%, 0%, 51.8%)
CIE-LAB	lab(32.83, -0.80, -29.13)
CIE-LCH	lch(32.83, 29.15, 268.42°)
OKLab	oklab(41.99% -0.033 -0.0827)
OKLCH	oklch(41.99% 0.089 248.2)
XYZ	xyz(7.0075, 7.4579, 19.8053)
Luminance	0.0746 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F507B #7B4A1F

analogous

#1F7B78 #1F507B #1F227B

triadic

#1F507B #7B1F50 #507B1F

tetradic

#1F507B #781F7B #7B4A1F #227B1F

square

#1F507B #781F7B #7B4A1F #227B1F

split-complementary

#1F507B #7B1F22 #7B781F

monochromatic

#061019 #13304A #1F507B #2B70AC #448FD0

Accessibility & contrast

On white

8.43

#1F507B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1F507B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F507B

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F507B	#FFFFFF	#000000	##FFFFFF
##1F507B	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D527D

Deuteranopia (green-blind)

#2F497A

Tritanopia (blue-blind)

#005A60

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f507b;
/* rgb */ color: rgb(31, 80, 123);
/* oklch */ color: oklch(42.0% 0.089 248.2);

Tailwind

colors: {
  custom: {
    50: '#6880a1',
    500: '#1f507b',
    950: '#000000',
  },
}

SCSS

$custom: #1f507b;
$custom-light: #6880a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f507b",
  "rgb": {
    "r": 31,
    "g": 80,
    "b": 123
  },
  "hsl": {
    "h": 208.043,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.41992,
    "c": 0.08903,
    "h": 248.2
  },
  "luminance": 0.07459
}

Semantic roles & 50–950 ramp

primary

#1F507B

secondary

#AE7848

accent

#8F45E3

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #1F507B

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

Preview Lab → · Contrast checker → · Palette generator →