#1B5DB1#1B5DB1

#1B5DB1 is a mid, vivid cyan. Relative luminance 0.112; OKLCH L 48.6% C 0.149 H 256.7°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B5DB1
RGB	rgb(27, 93, 177)
HSL	hsl(214, 74%, 40%)
HSV	hsv(214, 85%, 69%)
CMYK	cmyk(84.7%, 47.5%, 0%, 30.6%)
CIE-LAB	lab(39.97, 11.64, -50.35)
CIE-LCH	lch(39.97, 51.68, 283.02°)
OKLab	oklab(48.59% -0.0341 -0.1448)
OKLCH	oklch(48.59% 0.149 256.7)
XYZ	xyz(12.2992, 11.2345, 43.1067)
Luminance	0.1124 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5DB1 #B16F1B

analogous

#1BA8B1 #1B5DB1 #241BB1

triadic

#1B5DB1 #B11B5D #5DB11B

tetradic

#1B5DB1 #B11BA8 #B16F1B #1BB124

square

#1B5DB1 #B11BA8 #B16F1B #1BB124

split-complementary

#1B5DB1 #B1241B #A8B11B

monochromatic

#0B2547 #13417C #1B5DB1 #2B7ADF #609BE7

Accessibility & contrast

On white

6.47

#1B5DB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#1B5DB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5DB1

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5DB1	#FFFFFF	#000000	##FFFFFF
##1B5DB1	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E65B4

Deuteranopia (green-blind)

#0058AF

Tritanopia (blue-blind)

#00717E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #1b5db1;
/* rgb */ color: rgb(27, 93, 177);
/* oklch */ color: oklch(48.6% 0.149 256.7);

Tailwind

colors: {
  custom: {
    50: '#738ac9',
    500: '#1b5db1',
    950: '#000000',
  },
}

SCSS

$custom: #1b5db1;
$custom-light: #738ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5db1",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 177
  },
  "hsl": {
    "h": 213.6,
    "s": 73.529,
    "l": 40
  },
  "oklch": {
    "l": 0.48589,
    "c": 0.14872,
    "h": 256.7
  },
  "luminance": 0.11236
}

Semantic roles & 50–950 ramp

primary

#1B5DB1

secondary

#CB9B5D

accent

#9F38F0

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #1B5DB1

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

Preview Lab → · Contrast checker → · Palette generator →