#1B407F#1B407F

#1B407F is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.2% C 0.115 H 260.3°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B407F
RGB	rgb(27, 64, 127)
HSL	hsl(218, 65%, 30%)
HSV	hsv(218, 79%, 50%)
CMYK	cmyk(78.7%, 49.6%, 0%, 50.2%)
CIE-LAB	lab(27.93, 10.99, -39.45)
CIE-LCH	lch(27.93, 40.95, 285.57°)
OKLab	oklab(38.22% -0.0193 -0.1133)
OKLCH	oklch(38.22% 0.115 260.3)
XYZ	xyz(6.1148, 5.4314, 20.8007)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B407F #7F5A1B

analogous

#1B727F #1B407F #281B7F

triadic

#1B407F #7F1B40 #407F1B

tetradic

#1B407F #7F1B72 #7F5A1B #1B7F28

square

#1B407F #7F1B72 #7F5A1B #1B7F28

split-complementary

#1B407F #7F281B #727F1B

monochromatic

#060D1A #10274D #1B407F #2659B1 #3E76D6

Accessibility & contrast

On white

10.07

#1B407F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1B407F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B407F

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B407F	#FFFFFF	#000000	##FFFFFF
##1B407F	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D4781

Deuteranopia (green-blind)

#003E7E

Tritanopia (blue-blind)

#004F59

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b407f;
/* rgb */ color: rgb(27, 64, 127);
/* oklch */ color: oklch(38.2% 0.115 260.3);

Tailwind

colors: {
  custom: {
    50: '#6774a4',
    500: '#1b407f',
    950: '#000000',
  },
}

SCSS

$custom: #1b407f;
$custom-light: #6774a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b407f",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 127
  },
  "hsl": {
    "h": 217.8,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.38225,
    "c": 0.11491,
    "h": 260.3
  },
  "luminance": 0.05432
}

Semantic roles & 50–950 ramp

primary

#1B407F

secondary

#B38943

accent

#AA40E8

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B407F

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

Preview Lab → · Contrast checker → · Palette generator →