#1D5DBB#1D5DBB

#1D5DBB is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.4% C 0.162 H 258.8°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#1D5DBB
RGB	rgb(29, 93, 187)
HSL	hsl(216, 73%, 42%)
HSV	hsv(216, 84%, 73%)
CMYK	cmyk(84.5%, 50.3%, 0%, 26.7%)
CIE-LAB	lab(40.70, 15.77, -55.04)
CIE-LCH	lch(40.70, 57.26, 285.98°)
OKLab	oklab(49.38% -0.0315 -0.1585)
OKLCH	oklch(49.38% 0.162 258.8)
XYZ	xyz(13.3874, 11.6761, 48.5522)
Luminance	0.1168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5DBB #BB7B1D

analogous

#1DACBB #1D5DBB #2C1DBB

triadic

#1D5DBB #BB1D5D #5DBB1D

tetradic

#1D5DBB #BB1DAC #BB7B1D #1DBB2C

square

#1D5DBB #BB1DAC #BB7B1D #1DBB2C

split-complementary

#1D5DBB #BB2C1D #ACBB1D

monochromatic

#0D2851 #154386 #1D5DBB #357AE0 #6A9DE8

Accessibility & contrast

On white

6.30

#1D5DBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#1D5DBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5DBB

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5DBB	#FFFFFF	#000000	##FFFFFF
##1D5DBB	1.00	6.30	3.34	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2167BE

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#007483

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #1d5dbb;
/* rgb */ color: rgb(29, 93, 187);
/* oklch */ color: oklch(49.4% 0.162 258.8);

Tailwind

colors: {
  custom: {
    50: '#768ad0',
    500: '#1d5dbb',
    950: '#000000',
  },
}

SCSS

$custom: #1d5dbb;
$custom-light: #768ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5dbb",
  "rgb": {
    "r": 29,
    "g": 93,
    "b": 187
  },
  "hsl": {
    "h": 215.696,
    "s": 73.148,
    "l": 42.353
  },
  "oklch": {
    "l": 0.49375,
    "c": 0.16165,
    "h": 258.8
  },
  "luminance": 0.11678
}

Semantic roles & 50–950 ramp

primary

#1D5DBB

secondary

#CEA466

accent

#A538F0

background

#F7F8FC

surface

#EEF0F9

border

#C9CBD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #1D5DBB

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

Preview Lab → · Contrast checker → · Palette generator →