#17516A
Closest named color: Deep Teal (#00555A). oklch(41% 0.071 231), rgb(23, 81, 106).
Aa
White text reads best on this color (8.67:1).
About this color
#17516A is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.071 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.036 away. White text reads best on it, at 8.67:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.42:1 |
| White text | 8.67:1 |
Values
| HEX | #17516A |
| RGB | rgb(23, 81, 106) |
| HSL | hsl(198, 64%, 25%) |
| OKLCH | oklch(41% 0.071 231) |
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 #17516A | 8.67:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #17516A | 2.42:1 | Fails | Lc 14.5 | Not readable |
| #17516A text on white | 8.67:1 | AAA | Lc 89.5 | Fine for body text |
| #17516A 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
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
#A6C6D7
oklch(80.9% 0.042 231.1)
-
Step 400
400
#75A9C3
oklch(70.8% 0.067 230.6)
-
Step 500
500
#4E93B4
oklch(63.1% 0.086 231)
-
Step 600
600
#2E7DA0
oklch(55.7% 0.093 231)
-
Step 700
700
#1F6989
oklch(49.1% 0.087 231.3)
-
Step 800
800 (this color)
#17516A
oklch(41% 0.071 231)
-
Step 900
900
#1E475A
oklch(37.7% 0.056 230.9)
-
Step 950
950
#132A35
oklch(27.2% 0.035 230.7)
#17516A 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) | #44506B | 0.048 |
| Deuteranopia (no green cones) | #39486A | 0.041 |
| Tritanopia (no blue cones) | #005859 | 0.043 |
| Achromatopsia (no color) | #4B4B4B | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17516A
#17516A
oklch(41% 0.071 231)
- #693E24
#693E24
oklch(41% 0.072 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 #17516A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.039
- Charcoal #264653 ΔE 0.045
- Petrol #005F6A ΔE 0.045
- Light Navy #155084 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.047
- Dark Teal #014D4E ΔE 0.050
Use #17516A 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.