#1D4ABB#1D4ABB

#1D4ABB is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.4% C 0.185 H 263.9°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#1D4ABB
RGB	rgb(29, 74, 187)
HSL	hsl(223, 73%, 42%)
HSV	hsv(223, 84%, 73%)
CMYK	cmyk(84.5%, 60.4%, 0%, 26.7%)
CIE-LAB	lab(35.49, 28.35, -63.51)
CIE-LCH	lch(35.49, 69.55, 294.06°)
OKLab	oklab(45.43% -0.0196 -0.1838)
OKLCH	oklch(45.43% 0.185 263.9)
XYZ	xyz(11.9219, 8.7451, 48.0637)
Luminance	0.0875 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4ABB #BB8E1D

analogous

#1D99BB #1D4ABB #3F1DBB

triadic

#1D4ABB #BB1D4A #4ABB1D

tetradic

#1D4ABB #BB1D99 #BB8E1D #1DBB3F

square

#1D4ABB #BB1D99 #BB8E1D #1DBB3F

split-complementary

#1D4ABB #BB3F1D #99BB1D

monochromatic

#0D2051 #153586 #1D4ABB #3566E0 #6A8EE8

Accessibility & contrast

On white

7.64

#1D4ABB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1D4ABB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4ABB

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4ABB	#FFFFFF	#000000	##FFFFFF
##1D4ABB	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBF

Deuteranopia (green-blind)

#004CB9

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1d4abb;
/* rgb */ color: rgb(29, 74, 187);
/* oklch */ color: oklch(45.4% 0.185 263.9);

Tailwind

colors: {
  custom: {
    50: '#777cd0',
    500: '#1d4abb',
    950: '#000000',
  },
}

SCSS

$custom: #1d4abb;
$custom-light: #777cd0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4abb",
  "rgb": {
    "r": 29,
    "g": 74,
    "b": 187
  },
  "hsl": {
    "h": 222.911,
    "s": 73.148,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45432,
    "c": 0.18484,
    "h": 263.9
  },
  "luminance": 0.08747
}

Semantic roles & 50–950 ramp

primary

#1D4ABB

secondary

#CEB066

accent

#BB38F0

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0A0914

muted

#7C7B82

Preview Lab

Preview with #1D4ABB

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

Preview Lab → · Contrast checker → · Palette generator →