#1F4F7B#1F4F7B

#1F4F7B is a dark, moderate cyan. Relative luminance 0.073; OKLCH L 41.7% C 0.090 H 249.2°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#1F4F7B
RGB	rgb(31, 79, 123)
HSL	hsl(209, 60%, 30%)
HSV	hsv(209, 75%, 48%)
CMYK	cmyk(74.8%, 35.8%, 0%, 51.8%)
CIE-LAB	lab(32.51, -0.16, -29.64)
CIE-LCH	lch(32.51, 29.64, 269.70°)
OKLab	oklab(41.74% -0.032 -0.0842)
OKLCH	oklch(41.74% 0.09 249.2)
XYZ	xyz(6.9349, 7.3126, 19.7810)
Luminance	0.0731 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4F7B #7B4B1F

analogous

#1F7B79 #1F4F7B #1F217B

triadic

#1F4F7B #7B1F4F #4F7B1F

tetradic

#1F4F7B #791F7B #7B4B1F #217B1F

square

#1F4F7B #791F7B #7B4B1F #217B1F

split-complementary

#1F4F7B #7B1F21 #7B791F

monochromatic

#061019 #13304A #1F4F7B #2B6EAC #448DD0

Accessibility & contrast

On white

8.53

#1F4F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1F4F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4F7B

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4F7B	#FFFFFF	#000000	##FFFFFF
##1F4F7B	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B517D

Deuteranopia (green-blind)

#2E497A

Tritanopia (blue-blind)

#00595F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f4f7b;
/* rgb */ color: rgb(31, 79, 123);
/* oklch */ color: oklch(41.7% 0.090 249.2);

Tailwind

colors: {
  custom: {
    50: '#6880a1',
    500: '#1f4f7b',
    950: '#000000',
  },
}

SCSS

$custom: #1f4f7b;
$custom-light: #6880a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4f7b",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 123
  },
  "hsl": {
    "h": 208.696,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.41741,
    "c": 0.09004,
    "h": 249.2
  },
  "luminance": 0.07313
}

Semantic roles & 50–950 ramp

primary

#1F4F7B

secondary

#AE7948

accent

#9045E3

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #1F4F7B

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

Preview Lab → · Contrast checker → · Palette generator →