#00516D
Closest named color: Deep Sea Blue (#015482). oklch(40.7% 0.081 230.1), rgb(0, 81, 109).
Aa
White text reads best on this color (8.75:1).
About this color
#00516D is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.081 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.035 away. White text reads best on it, at 8.75:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.39:1 |
| White text | 8.75:1 |
Values
| HEX | #00516D |
| RGB | rgb(0, 81, 109) |
| HSL | hsl(195, 100%, 21%) |
| OKLCH | oklch(40.7% 0.081 230.1) |
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 #00516D | 8.75:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #00516D | 2.39:1 | Fails | Lc 14.5 | Not readable |
| #00516D text on white | 8.75:1 | AAA | Lc 89.5 | Fine for body text |
| #00516D text on black | 2.39:1 | Fails | Lc -12.8 | Not readable |
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 800.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A2C7DA
oklch(80.9% 0.048 230.4)
-
Step 400
400
#6DAAC7
oklch(70.7% 0.076 229.7)
-
Step 500
500
#4194B9
oklch(63.1% 0.097 230.3)
-
Step 600
600
#157EA5
oklch(55.6% 0.105 230)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800 (this color)
#00516D
oklch(40.7% 0.081 230.1)
-
Step 900
900
#15475D
oklch(37.6% 0.064 231.2)
-
Step 950
950
#0F2A36
oklch(27% 0.04 229.8)
#00516D 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) | #42506E | 0.054 |
| Deuteranopia (no green cones) | #35476D | 0.046 |
| Tritanopia (no blue cones) | #00595A | 0.048 |
| Achromatopsia (no color) | #4B4B4B | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00516D
#00516D
oklch(40.7% 0.081 230.1)
- #6C3B1D
#6C3B1D
oklch(40.7% 0.081 50.2)
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 #00516D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.035
- Deep Teal #00555A ΔE 0.039
- Light Navy #155084 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.043
- Petrol #005F6A ΔE 0.048
- Charcoal #264653 ΔE 0.050
- Dark Teal #014D4E ΔE 0.052
- Twilight Blue #0A437A ΔE 0.053
Use #00516D 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.