#1F4B7D#1F4B7D

#1F4B7D is a dark, moderate cyan. Relative luminance 0.068; OKLCH L 40.9% C 0.097 H 253.7°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F4B7D
RGB	rgb(31, 75, 125)
HSL	hsl(212, 60%, 31%)
HSV	hsv(212, 75%, 49%)
CMYK	cmyk(75.2%, 40%, 0%, 51%)
CIE-LAB	lab(31.36, 3.26, -32.71)
CIE-LCH	lch(31.36, 32.87, 275.69°)
OKLab	oklab(40.88% -0.0273 -0.0932)
OKLCH	oklch(40.88% 0.097 253.7)
XYZ	xyz(6.7814, 6.8034, 20.3538)
Luminance	0.0680 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4B7D #7D511F

analogous

#1F7A7D #1F4B7D #221F7D

triadic

#1F4B7D #7D1F4B #4B7D1F

tetradic

#1F4B7D #7D1F7A #7D511F #1F7D22

square

#1F4B7D #7D1F7A #7D511F #1F7D22

split-complementary

#1F4B7D #7D221F #7A7D1F

monochromatic

#07101B #132E4C #1F4B7D #2B68AE #4587D1

Accessibility & contrast

On white

8.90

#1F4B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1F4B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4B7D

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4B7D	#FFFFFF	#000000	##FFFFFF
##1F4B7D	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344F7F

Deuteranopia (green-blind)

#25467C

Tritanopia (blue-blind)

#00575E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f4b7d;
/* rgb */ color: rgb(31, 75, 125);
/* oklch */ color: oklch(40.9% 0.097 253.7);

Tailwind

colors: {
  custom: {
    50: '#687ca3',
    500: '#1f4b7d',
    950: '#000000',
  },
}

SCSS

$custom: #1f4b7d;
$custom-light: #687ca3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4b7d",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 125
  },
  "hsl": {
    "h": 211.915,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.40876,
    "c": 0.09714,
    "h": 253.7
  },
  "luminance": 0.06804
}

Semantic roles & 50–950 ramp

primary

#1F4B7D

secondary

#B07F48

accent

#9944E3

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1F4B7D

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

Preview Lab → · Contrast checker → · Palette generator →