#1B447F#1B447F

#1B447F is a dark, moderate blue. Relative luminance 0.059; OKLCH L 39.2% C 0.110 H 258.0°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#1B447F
RGB	rgb(27, 68, 127)
HSL	hsl(215, 65%, 30%)
HSV	hsv(215, 79%, 50%)
CMYK	cmyk(78.7%, 46.5%, 0%, 50.2%)
CIE-LAB	lab(29.16, 8.23, -37.48)
CIE-LCH	lch(29.16, 38.37, 282.39°)
OKLab	oklab(39.17% -0.0229 -0.1074)
OKLCH	oklch(39.17% 0.11 258)
XYZ	xyz(6.3485, 5.8988, 20.8786)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B447F #7F561B

analogous

#1B767F #1B447F #241B7F

triadic

#1B447F #7F1B44 #447F1B

tetradic

#1B447F #7F1B76 #7F561B #1B7F24

square

#1B447F #7F1B76 #7F561B #1B7F24

split-complementary

#1B447F #7F241B #767F1B

monochromatic

#060E1A #10294D #1B447F #265FB1 #3E7DD6

Accessibility & contrast

On white

9.63

#1B447F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1B447F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B447F

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B447F	#FFFFFF	#000000	##FFFFFF
##1B447F	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264A81

Deuteranopia (green-blind)

#11407E

Tritanopia (blue-blind)

#00525B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b447f;
/* rgb */ color: rgb(27, 68, 127);
/* oklch */ color: oklch(39.2% 0.110 258.0);

Tailwind

colors: {
  custom: {
    50: '#6777a4',
    500: '#1b447f',
    950: '#000000',
  },
}

SCSS

$custom: #1b447f;
$custom-light: #6777a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b447f",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 127
  },
  "hsl": {
    "h": 215.4,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.39169,
    "c": 0.10982,
    "h": 258
  },
  "luminance": 0.059
}

Semantic roles & 50–950 ramp

primary

#1B447F

secondary

#B38543

accent

#A340E8

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B447F

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

Preview Lab → · Contrast checker → · Palette generator →