#1F5DAB#1F5DAB

#1F5DAB is a mid, vivid cyan. Relative luminance 0.111; OKLCH L 48.3% C 0.140 H 256.3°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F5DAB
RGB	rgb(31, 93, 171)
HSL	hsl(213, 69%, 40%)
HSV	hsv(213, 82%, 67%)
CMYK	cmyk(81.9%, 45.6%, 0%, 32.9%)
CIE-LAB	lab(39.68, 9.63, -47.28)
CIE-LCH	lch(39.68, 48.25, 281.51°)
OKLab	oklab(48.27% -0.0332 -0.1357)
OKLCH	oklch(48.27% 0.14 256.3)
XYZ	xyz(11.8274, 11.0588, 40.0314)
Luminance	0.1106 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5DAB #AB6D1F

analogous

#1FA3AB #1F5DAB #271FAB

triadic

#1F5DAB #AB1F5D #5DAB1F

tetradic

#1F5DAB #AB1FA3 #AB6D1F #1FAB27

square

#1F5DAB #AB1FA3 #AB6D1F #1FAB27

split-complementary

#1F5DAB #AB271F #A3AB1F

monochromatic

#0C2543 #164177 #1F5DAB #2E7AD9 #629BE3

Accessibility & contrast

On white

6.54

#1F5DAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#1F5DAB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F5DAB

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5DAB	#FFFFFF	#000000	##FFFFFF
##1F5DAB	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3464AE

Deuteranopia (green-blind)

#1358A9

Tritanopia (blue-blind)

#00707B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1f5dab;
/* rgb */ color: rgb(31, 93, 171);
/* oklch */ color: oklch(48.3% 0.140 256.3);

Tailwind

colors: {
  custom: {
    50: '#728ac4',
    500: '#1f5dab',
    950: '#000000',
  },
}

SCSS

$custom: #1f5dab;
$custom-light: #728ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5dab",
  "rgb": {
    "r": 31,
    "g": 93,
    "b": 171
  },
  "hsl": {
    "h": 213.429,
    "s": 69.307,
    "l": 39.608
  },
  "oklch": {
    "l": 0.48265,
    "c": 0.13968,
    "h": 256.3
  },
  "luminance": 0.1106
}

Semantic roles & 50–950 ramp

primary

#1F5DAB

secondary

#C7995E

accent

#9E3CEC

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #1F5DAB

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

Preview Lab → · Contrast checker → · Palette generator →