#1D5CBB#1D5CBB

#1D5CBB is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.2% C 0.163 H 259.1°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#1D5CBB
RGB	rgb(29, 92, 187)
HSL	hsl(216, 73%, 42%)
HSV	hsv(216, 84%, 73%)
CMYK	cmyk(84.5%, 50.8%, 0%, 26.7%)
CIE-LAB	lab(40.41, 16.42, -55.50)
CIE-LCH	lch(40.41, 57.88, 286.48°)
OKLab	oklab(49.16% -0.0308 -0.1599)
OKLCH	oklch(49.16% 0.163 259.1)
XYZ	xyz(13.3002, 11.5017, 48.5231)
Luminance	0.1150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5CBB #BB7C1D

analogous

#1DABBB #1D5CBB #2D1DBB

triadic

#1D5CBB #BB1D5C #5CBB1D

tetradic

#1D5CBB #BB1DAB #BB7C1D #1DBB2D

square

#1D5CBB #BB1DAB #BB7C1D #1DBB2D

split-complementary

#1D5CBB #BB2D1D #ABBB1D

monochromatic

#0D2851 #154286 #1D5CBB #3579E0 #6A9CE8

Accessibility & contrast

On white

6.36

#1D5CBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#1D5CBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5CBB

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5CBB	#FFFFFF	#000000	##FFFFFF
##1D5CBB	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E67BE

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#007382

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #1d5cbb;
/* rgb */ color: rgb(29, 92, 187);
/* oklch */ color: oklch(49.2% 0.163 259.1);

Tailwind

colors: {
  custom: {
    50: '#7689d0',
    500: '#1d5cbb',
    950: '#000000',
  },
}

SCSS

$custom: #1d5cbb;
$custom-light: #7689d0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5cbb",
  "rgb": {
    "r": 29,
    "g": 92,
    "b": 187
  },
  "hsl": {
    "h": 216.076,
    "s": 73.148,
    "l": 42.353
  },
  "oklch": {
    "l": 0.49158,
    "c": 0.16287,
    "h": 259.1
  },
  "luminance": 0.11503
}

Semantic roles & 50–950 ramp

primary

#1D5CBB

secondary

#CEA466

accent

#A738F0

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #1D5CBB

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

Preview Lab → · Contrast checker → · Palette generator →