#00516E
Closest named color: Deep Sea Blue (#015482). oklch(40.8% 0.082 231), rgb(0, 81, 110).
Aa
White text reads best on this color (8.74:1).
About this color
#00516E is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.082 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.034 away. White text reads best on it, at 8.74:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.40:1 |
| White text | 8.74:1 |
Values
| HEX | #00516E |
| RGB | rgb(0, 81, 110) |
| HSL | hsl(196, 100%, 22%) |
| OKLCH | oklch(40.8% 0.082 231) |
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 #00516E | 8.74:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #00516E | 2.40:1 | Fails | Lc 14.6 | Not readable |
| #00516E text on white | 8.74:1 | AAA | Lc 89.4 | Fine for body text |
| #00516E text on black | 2.40:1 | 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
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300
#A2C7DA
oklch(80.9% 0.048 230.4)
-
Step 400
400
#6DAAC8
oklch(70.8% 0.077 230.6)
-
Step 500
500
#4194BA
oklch(63.1% 0.098 231)
-
Step 600
600
#147EA6
oklch(55.7% 0.107 230.5)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800 (this color)
#00516E
oklch(40.8% 0.082 231)
-
Step 900
900
#15475D
oklch(37.6% 0.064 231.2)
-
Step 950
950
#0F2A37
oklch(27.1% 0.041 231.9)
#00516E 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) | #42506F | 0.054 |
| Deuteranopia (no green cones) | #35476E | 0.046 |
| Tritanopia (no blue cones) | #00595B | 0.047 |
| Achromatopsia (no color) | #4B4B4B | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00516E
#00516E
oklch(40.8% 0.082 231)
- #6C3B1C
#6C3B1C
oklch(40.7% 0.082 50.8)
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 #00516E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.034
- Light Navy #155084 ΔE 0.040
- Deep Teal #00555A ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.043
- Petrol #005F6A ΔE 0.048
- Charcoal #264653 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.052
- Dark Teal #014D4E ΔE 0.054
Use #00516E 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.