#17516B
Closest named color: Deep Teal (#00555A). oklch(41.1% 0.072 232.1), rgb(23, 81, 107).
Aa
White text reads best on this color (8.65:1).
About this color
#17516B is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.072 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.037 away. White text reads best on it, at 8.65:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.42:1 |
| White text | 8.65:1 |
Values
| HEX | #17516B |
| RGB | rgb(23, 81, 107) |
| HSL | hsl(199, 65%, 25%) |
| OKLCH | oklch(41.1% 0.072 232.1) |
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 #17516B | 8.65:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #17516B | 2.42:1 | Fails | Lc 14.6 | Not readable |
| #17516B text on white | 8.65:1 | AAA | Lc 89.4 | Fine for body text |
| #17516B text on black | 2.42:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A6C6D8
oklch(80.9% 0.043 232.7)
-
Step 400
400
#75A9C4
oklch(70.8% 0.068 231.6)
-
Step 500
500
#4E93B5
oklch(63.2% 0.086 231.8)
-
Step 600
600
#2E7CA1
oklch(55.5% 0.094 232.8)
-
Step 700
700
#1F698A
oklch(49.2% 0.088 232.2)
-
Step 800
800 (this color)
#17516B
oklch(41.1% 0.072 232.1)
-
Step 900
900
#1E475A
oklch(37.7% 0.056 230.9)
-
Step 950
950
#132935
oklch(26.9% 0.036 234.1)
#17516B 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) | #44506C | 0.048 |
| Deuteranopia (no green cones) | #39486B | 0.041 |
| Tritanopia (no blue cones) | #00585A | 0.043 |
| Achromatopsia (no color) | #4B4B4B | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17516B
#17516B
oklch(41.1% 0.072 232.1)
- #693E23
#693E23
oklch(40.9% 0.072 51.6)
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 #17516B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.038
- Light Navy #155084 ΔE 0.043
- Petrol #005F6A ΔE 0.045
- Charcoal #264653 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.048
- Dark Teal #014D4E ΔE 0.052
Use #17516B 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.