#1D5ABB#1D5ABB

#1D5ABB is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.7% C 0.165 H 259.7°. Best body text is #FFFFFF at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#1D5ABB
RGB	rgb(29, 90, 187)
HSL	hsl(217, 73%, 42%)
HSV	hsv(217, 84%, 73%)
CMYK	cmyk(84.5%, 51.9%, 0%, 26.7%)
CIE-LAB	lab(39.85, 17.74, -56.42)
CIE-LCH	lch(39.85, 59.14, 287.46°)
OKLab	oklab(48.73% -0.0295 -0.1626)
OKLCH	oklch(48.73% 0.165 259.7)
XYZ	xyz(13.1292, 11.1598, 48.4661)
Luminance	0.1116 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5ABB #BB7E1D

analogous

#1DA9BB #1D5ABB #2F1DBB

triadic

#1D5ABB #BB1D5A #5ABB1D

tetradic

#1D5ABB #BB1DA9 #BB7E1D #1DBB2F

square

#1D5ABB #BB1DA9 #BB7E1D #1DBB2F

split-complementary

#1D5ABB #BB2F1D #A9BB1D

monochromatic

#0D2751 #154186 #1D5ABB #3577E0 #6A9BE8

Accessibility & contrast

On white

6.50

#1D5ABB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#1D5ABB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5ABB

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5ABB	#FFFFFF	#000000	##FFFFFF
##1D5ABB	1.00	6.50	3.23	6.50
#FFFFFF	6.50	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1565BE

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#007282

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #1d5abb;
/* rgb */ color: rgb(29, 90, 187);
/* oklch */ color: oklch(48.7% 0.165 259.7);

Tailwind

colors: {
  custom: {
    50: '#7687d0',
    500: '#1d5abb',
    950: '#000000',
  },
}

SCSS

$custom: #1d5abb;
$custom-light: #7687d0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5abb",
  "rgb": {
    "r": 29,
    "g": 90,
    "b": 187
  },
  "hsl": {
    "h": 216.835,
    "s": 73.148,
    "l": 42.353
  },
  "oklch": {
    "l": 0.48726,
    "c": 0.1653,
    "h": 259.7
  },
  "luminance": 0.11161
}

Semantic roles & 50–950 ramp

primary

#1D5ABB

secondary

#CEA666

accent

#A938F0

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #1D5ABB

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

Preview Lab → · Contrast checker → · Palette generator →