#1B5DA1#1B5DA1

#1B5DA1 is a mid, vivid cyan. Relative luminance 0.106; OKLCH L 47.5% C 0.127 H 252.9°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#1B5DA1
RGB	rgb(27, 93, 161)
HSL	hsl(210, 71%, 37%)
HSV	hsv(210, 83%, 63%)
CMYK	cmyk(83.2%, 42.2%, 0%, 36.9%)
CIE-LAB	lab(38.96, 5.27, -42.51)
CIE-LCH	lch(38.96, 42.83, 277.07°)
OKLab	oklab(47.47% -0.0373 -0.1217)
OKLCH	oklch(47.47% 0.127 252.9)
XYZ	xyz(10.7969, 10.6336, 35.1947)
Luminance	0.1064 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5DA1 #A15F1B

analogous

#1BA0A1 #1B5DA1 #1C1BA1

triadic

#1B5DA1 #A11B5D #5DA11B

tetradic

#1B5DA1 #A11BA0 #A15F1B #1BA11C

square

#1B5DA1 #A11BA0 #A15F1B #1BA11C

split-complementary

#1B5DA1 #A11C1B #A0A11B

monochromatic

#092038 #123F6D #1B5DA1 #247BD5 #549AE2

Accessibility & contrast

On white

6.72

#1B5DA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#1B5DA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5DA1

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5DA1	#FFFFFF	#000000	##FFFFFF
##1B5DA1	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B62A4

Deuteranopia (green-blind)

#2356A0

Tritanopia (blue-blind)

#006D77

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1b5da1;
/* rgb */ color: rgb(27, 93, 161);
/* oklch */ color: oklch(47.5% 0.127 252.9);

Tailwind

colors: {
  custom: {
    50: '#6f8abd',
    500: '#1b5da1',
    950: '#000000',
  },
}

SCSS

$custom: #1b5da1;
$custom-light: #6f8abd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5da1",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 161
  },
  "hsl": {
    "h": 210.448,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.47474,
    "c": 0.12729,
    "h": 252.9
  },
  "luminance": 0.10635
}

Semantic roles & 50–950 ramp

primary

#1B5DA1

secondary

#C58D52

accent

#953AEE

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1B5DA1

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

Preview Lab → · Contrast checker → · Palette generator →