#1D397B#1D397B

#1D397B is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.4% C 0.118 H 264.1°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#1D397B
RGB	rgb(29, 57, 123)
HSL	hsl(222, 62%, 30%)
HSV	hsv(222, 76%, 48%)
CMYK	cmyk(76.4%, 53.7%, 0%, 51.8%)
CIE-LAB	lab(25.61, 14.53, -40.66)
CIE-LCH	lch(25.61, 43.18, 289.67°)
OKLab	oklab(36.39% -0.0121 -0.117)
OKLCH	oklch(36.39% 0.118 264.1)
XYZ	xyz(5.5437, 4.6169, 19.3340)
Luminance	0.0462 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D397B #7B5F1D

analogous

#1D687B #1D397B #301D7B

triadic

#1D397B #7B1D39 #397B1D

tetradic

#1D397B #7B1D68 #7B5F1D #1D7B30

square

#1D397B #7B1D68 #7B5F1D #1D7B30

split-complementary

#1D397B #7B301D #687B1D

monochromatic

#060B19 #112249 #1D397B #2950AD #406CD2

Accessibility & contrast

On white

10.92

#1D397B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1D397B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D397B

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D397B	#FFFFFF	#000000	##FFFFFF
##1D397B	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E417D

Deuteranopia (green-blind)

#00397A

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d397b;
/* rgb */ color: rgb(29, 57, 123);
/* oklch */ color: oklch(36.4% 0.118 264.1);

Tailwind

colors: {
  custom: {
    50: '#676ea2',
    500: '#1d397b',
    950: '#000000',
  },
}

SCSS

$custom: #1d397b;
$custom-light: #676ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d397b",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 123
  },
  "hsl": {
    "h": 222.128,
    "s": 61.842,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36385,
    "c": 0.11759,
    "h": 264.1
  },
  "luminance": 0.04618
}

Semantic roles & 50–950 ramp

primary

#1D397B

secondary

#AF8F45

accent

#B543E5

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D397B

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

Preview Lab → · Contrast checker → · Palette generator →