#1D437F#1D437F

#1D437F is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.0% C 0.110 H 259.3°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#1D437F
RGB	rgb(29, 67, 127)
HSL	hsl(217, 63%, 31%)
HSV	hsv(217, 77%, 50%)
CMYK	cmyk(77.2%, 47.2%, 0%, 50.2%)
CIE-LAB	lab(28.92, 9.19, -37.85)
CIE-LCH	lch(28.92, 38.95, 283.65°)
OKLab	oklab(39.01% -0.0205 -0.1085)
OKLCH	oklch(39.01% 0.11 259.3)
XYZ	xyz(6.3432, 5.8071, 20.8611)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D437F #7F591D

analogous

#1D747F #1D437F #281D7F

triadic

#1D437F #7F1D43 #437F1D

tetradic

#1D437F #7F1D74 #7F591D #1D7F28

square

#1D437F #7F1D74 #7F591D #1D7F28

split-complementary

#1D437F #7F281D #747F1D

monochromatic

#060E1B #12294D #1D437F #285DB1 #427BD4

Accessibility & contrast

On white

9.72

#1D437F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1D437F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D437F

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D437F	#FFFFFF	#000000	##FFFFFF
##1D437F	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244981

Deuteranopia (green-blind)

#0E407E

Tritanopia (blue-blind)

#00515A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d437f;
/* rgb */ color: rgb(29, 67, 127);
/* oklch */ color: oklch(39.0% 0.110 259.3);

Tailwind

colors: {
  custom: {
    50: '#6876a4',
    500: '#1d437f',
    950: '#000000',
  },
}

SCSS

$custom: #1d437f;
$custom-light: #6876a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d437f",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 127
  },
  "hsl": {
    "h": 216.735,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.39008,
    "c": 0.11042,
    "h": 259.3
  },
  "luminance": 0.05808
}

Semantic roles & 50–950 ramp

primary

#1D437F

secondary

#B28845

accent

#A642E6

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D437F

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

Preview Lab → · Contrast checker → · Palette generator →