#519EBF
Closest named color: Greyblue (#77A1B5). oklch(66.3% 0.09 228.3), rgb(81, 158, 191).
Aa
Black text reads best on this color (6.99:1).
About this color
#519EBF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.090 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.042 away. Black text reads best on it, at 6.99:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 6.99:1 |
| White text | 3.00:1 |
Values
| HEX | #519EBF |
| RGB | rgb(81, 158, 191) |
| HSL | hsl(198, 46%, 53%) |
| OKLCH | oklch(66.3% 0.09 228.3) |
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 #519EBF | 3.00:1 | AA large text | Lc -61.9 | Content text, not long reading |
| Black text on #519EBF | 6.99:1 | AA | Lc 47.5 | Large or bold text, headings |
| #519EBF text on white | 3.00:1 | AA large text | Lc 56.5 | Large or bold text, headings |
| #519EBF text on black | 6.99:1 | AA | Lc -45.2 | Large or bold text, headings |
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
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A4C7D7
oklch(80.9% 0.044 227.3)
-
Step 400
400
#70AAC4
oklch(70.8% 0.071 228)
-
Step 500
500 (this color)
#519EBF
oklch(66.3% 0.09 228.3)
-
Step 600
600
#217EA1
oklch(55.7% 0.099 228.5)
-
Step 700
700
#106A89
oklch(49.1% 0.091 228)
-
Step 800
800
#135770
oklch(42.8% 0.076 228.1)
-
Step 900
900
#19475A
oklch(37.5% 0.059 228.7)
-
Step 950
950
#102A35
oklch(27% 0.038 228.2)
#519EBF 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) | #8D9BC1 | 0.066 |
| Deuteranopia (no green cones) | #7D90BF | 0.057 |
| Tritanopia (no blue cones) | #00A7A9 | 0.060 |
| Achromatopsia (no color) | #959595 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519EBF
#519EBF
oklch(66.3% 0.09 228.3)
- #C18261
#C18261
oklch(66.3% 0.091 48.3)
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 #519EBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.042
- Cadet Blue #5F9EA0 ΔE 0.047
- Faded Blue #658CBB ΔE 0.051
- Turquoise Blue #06B1C4 ΔE 0.056
- Silver Lake Blue #778DA9 ΔE 0.058
- Blue Grey #758DA3 ΔE 0.060
- Bluegrey #85A3B2 ΔE 0.061
- Bluey Grey #89A0B0 ΔE 0.064
Use #519EBF 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.