#1B538E#1B538E

#1B538E is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.8% C 0.113 H 252.9°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#1B538E
RGB	rgb(27, 83, 142)
HSL	hsl(211, 68%, 33%)
HSV	hsv(211, 81%, 56%)
CMYK	cmyk(81%, 41.5%, 0%, 44.3%)
CIE-LAB	lab(34.74, 4.22, -37.78)
CIE-LCH	lch(34.74, 38.02, 276.37°)
OKLab	oklab(43.82% -0.0331 -0.108)
OKLCH	oklch(43.82% 0.113 252.9)
XYZ	xyz(8.4259, 8.3715, 26.7577)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B538E #8E561B

analogous

#1B8C8E #1B538E #1D1B8E

triadic

#1B538E #8E1B53 #538E1B

tetradic

#1B538E #8E1B8C #8E561B #1B8E1D

square

#1B538E #8E1B8C #8E561B #1B8E1D

split-complementary

#1B538E #8E1D1B #8C8E1B

monochromatic

#071727 #11355B #1B538E #2571C1 #4790DC

Accessibility & contrast

On white

7.85

#1B538E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1B538E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B538E

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B538E	#FFFFFF	#000000	##FFFFFF
##1B538E	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365790

Deuteranopia (green-blind)

#234D8D

Tritanopia (blue-blind)

#006169

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b538e;
/* rgb */ color: rgb(27, 83, 142);
/* oklch */ color: oklch(43.8% 0.113 252.9);

Tailwind

colors: {
  custom: {
    50: '#6a82af',
    500: '#1b538e',
    950: '#000000',
  },
}

SCSS

$custom: #1b538e;
$custom-light: #6a82af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b538e",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 142
  },
  "hsl": {
    "h": 210.783,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.43816,
    "c": 0.11298,
    "h": 252.9
  },
  "luminance": 0.08373
}

Semantic roles & 50–950 ramp

primary

#1B538E

secondary

#BE8447

accent

#963DEB

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1B538E

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

Preview Lab → · Contrast checker → · Palette generator →