#1D3B9B#1D3B9B

#1D3B9B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.160 H 265.8°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#1D3B9B
RGB	rgb(29, 59, 155)
HSL	hsl(226, 68%, 36%)
HSV	hsv(226, 81%, 61%)
CMYK	cmyk(81.3%, 61.9%, 0%, 39.2%)
CIE-LAB	lab(28.79, 25.95, -55.33)
CIE-LCH	lch(28.79, 61.11, 295.12°)
OKLab	oklab(39.59% -0.0117 -0.16)
OKLCH	oklch(39.59% 0.16 265.8)
XYZ	xyz(7.9850, 5.7548, 31.6939)
Luminance	0.0576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3B9B #9B7D1D

analogous

#1D7A9B #1D3B9B #3E1D9B

triadic

#1D3B9B #9B1D3B #3B9B1D

tetradic

#1D3B9B #9B1D7A #9B7D1D #1D9B3E

square

#1D3B9B #9B1D7A #9B7D1D #1D9B3E

split-complementary

#1D3B9B #9B3E1D #7A9B1D

monochromatic

#0A1434 #132767 #1D3B9B #274FCF #5375DF

Accessibility & contrast

On white

9.76

#1D3B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1D3B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3B9B

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3B9B	#FFFFFF	#000000	##FFFFFF
##1D3B9B	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9E

Deuteranopia (green-blind)

#003E99

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d3b9b;
/* rgb */ color: rgb(29, 59, 155);
/* oklch */ color: oklch(39.6% 0.160 265.8);

Tailwind

colors: {
  custom: {
    50: '#6f70b9',
    500: '#1d3b9b',
    950: '#000000',
  },
}

SCSS

$custom: #1d3b9b;
$custom-light: #6f70b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3b9b",
  "rgb": {
    "r": 29,
    "g": 59,
    "b": 155
  },
  "hsl": {
    "h": 225.714,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39586,
    "c": 0.16046,
    "h": 265.8
  },
  "luminance": 0.05756
}

Semantic roles & 50–950 ramp

primary

#1D3B9B

secondary

#C2A752

accent

#C23CEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3B9B

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

Preview Lab → · Contrast checker → · Palette generator →