#1F447B#1F447B

#1F447B is a dark, moderate blue. Relative luminance 0.059; OKLCH L 39.0% C 0.103 H 258.3°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#1F447B
RGB	rgb(31, 68, 123)
HSL	hsl(216, 60%, 30%)
HSV	hsv(216, 75%, 48%)
CMYK	cmyk(74.8%, 44.7%, 0%, 51.8%)
CIE-LAB	lab(29.04, 7.19, -35.15)
CIE-LCH	lch(29.04, 35.87, 281.56°)
OKLab	oklab(39.04% -0.0208 -0.1005)
OKLCH	oklch(39.04% 0.103 258.3)
XYZ	xyz(6.2060, 5.8549, 19.5381)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F447B #7B561F

analogous

#1F727B #1F447B #281F7B

triadic

#1F447B #7B1F44 #447B1F

tetradic

#1F447B #7B1F72 #7B561F #1F7B28

square

#1F447B #7B1F72 #7B561F #1F7B28

split-complementary

#1F447B #7B281F #727B1F

monochromatic

#060E19 #13294A #1F447B #2B5FAC #447DD0

Accessibility & contrast

On white

9.67

#1F447B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1F447B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F447B

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F447B	#FFFFFF	#000000	##FFFFFF
##1F447B	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29497D

Deuteranopia (green-blind)

#19417A

Tritanopia (blue-blind)

#005159

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f447b;
/* rgb */ color: rgb(31, 68, 123);
/* oklch */ color: oklch(39.0% 0.103 258.3);

Tailwind

colors: {
  custom: {
    50: '#6877a1',
    500: '#1f447b',
    950: '#000000',
  },
}

SCSS

$custom: #1f447b;
$custom-light: #6877a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f447b",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 123
  },
  "hsl": {
    "h": 215.87,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.3904,
    "c": 0.10262,
    "h": 258.3
  },
  "luminance": 0.05856
}

Semantic roles & 50–950 ramp

primary

#1F447B

secondary

#AE8548

accent

#A345E3

background

#F6F7FA

surface

#EBEDF3

border

#C6C8CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F447B

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

Preview Lab → · Contrast checker → · Palette generator →