#1D4EB3#1D4EB3

#1D4EB3 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.5% C 0.169 H 262.4°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#1D4EB3
RGB	rgb(29, 78, 179)
HSL	hsl(220, 72%, 41%)
HSV	hsv(220, 84%, 70%)
CMYK	cmyk(83.8%, 56.4%, 0%, 29.8%)
CIE-LAB	lab(35.91, 22.56, -58.10)
CIE-LCH	lch(35.91, 62.33, 291.22°)
OKLab	oklab(45.55% -0.0224 -0.1678)
OKLCH	oklch(45.55% 0.169 262.4)
XYZ	xyz(11.3648, 8.9633, 43.7702)
Luminance	0.0896 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4EB3 #B3821D

analogous

#1D99B3 #1D4EB3 #371DB3

triadic

#1D4EB3 #B31D4E #4EB31D

tetradic

#1D4EB3 #B31D99 #B3821D #1DB337

square

#1D4EB3 #B31D99 #B3821D #1DB337

split-complementary

#1D4EB3 #B3371D #99B31D

monochromatic

#0C204A #14377E #1D4EB3 #3068DD #648FE6

Accessibility & contrast

On white

7.52

#1D4EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#1D4EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4EB3

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4EB3	#FFFFFF	#000000	##FFFFFF
##1D4EB3	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB6

Deuteranopia (green-blind)

#004EB1

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1d4eb3;
/* rgb */ color: rgb(29, 78, 179);
/* oklch */ color: oklch(45.5% 0.169 262.4);

Tailwind

colors: {
  custom: {
    50: '#747ecb',
    500: '#1d4eb3',
    950: '#000000',
  },
}

SCSS

$custom: #1d4eb3;
$custom-light: #747ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4eb3",
  "rgb": {
    "r": 29,
    "g": 78,
    "b": 179
  },
  "hsl": {
    "h": 220.4,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.45548,
    "c": 0.16933,
    "h": 262.4
  },
  "luminance": 0.08965
}

Semantic roles & 50–950 ramp

primary

#1D4EB3

secondary

#CBA861

accent

#B339EF

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1D4EB3

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

Preview Lab → · Contrast checker → · Palette generator →