#519BBC
Closest named color: Faded Blue (#658CBB). oklch(65.5% 0.089 229.3), rgb(81, 155, 188).
Aa
Black text reads best on this color (6.76:1).
About this color
#519BBC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.089 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.044 away. Black text reads best on it, at 6.76:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.76:1 |
| White text | 3.10:1 |
Values
| HEX | #519BBC |
| RGB | rgb(81, 155, 188) |
| HSL | hsl(199, 44%, 53%) |
| OKLCH | oklch(65.5% 0.089 229.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #519BBC | 3.10:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #519BBC | 6.76:1 | AA | Lc 46.2 | Large or bold text, headings |
| #519BBC text on white | 3.10:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #519BBC text on black | 6.76:1 | AA | Lc -43.9 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADDE6
oklch(88.6% 0.024 227.8)
-
Step 300
300
#A5C7D7
oklch(81% 0.043 228)
-
Step 400
400
#72A9C3
oklch(70.6% 0.069 229.2)
-
Step 500
500 (this color)
#519BBC
oklch(65.5% 0.089 229.3)
-
Step 600
600
#267DA0
oklch(55.5% 0.096 229.5)
-
Step 700
700
#176A89
oklch(49.2% 0.089 228.9)
-
Step 800
800
#17566F
oklch(42.6% 0.074 229.2)
-
Step 900
900
#1B475A
oklch(37.6% 0.058 229.5)
-
Step 950
950
#112A35
oklch(27.1% 0.037 229)
#519BBC with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #8A99BE | 0.063 |
| Deuteranopia (no green cones) | #7B8DBC | 0.056 |
| Tritanopia (no blue cones) | #00A4A6 | 0.061 |
| Achromatopsia (no color) | #929292 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519BBC
#519BBC
oklch(65.5% 0.089 229.3)
- #BD805F
#BD805F
oklch(65.4% 0.089 49.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #519BBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.044
- Greyblue #77A1B5 ΔE 0.046
- Cadet Blue #5F9EA0 ΔE 0.047
- Silver Lake Blue #778DA9 ΔE 0.052
- Blue Grey #758DA3 ΔE 0.054
- Dusty Blue #5A86AD ΔE 0.058
- Turquoise Blue #06B1C4 ΔE 0.063
- Off Blue #5684AE ΔE 0.064
Use #519BBC in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.