#10516E
Closest named color: Deep Sea Blue (#015482). oklch(41.1% 0.078 233.4), rgb(16, 81, 110).
Aa
White text reads best on this color (8.66:1).
About this color
#10516E is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.078 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.033 away. White text reads best on it, at 8.66:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.42:1 |
| White text | 8.66:1 |
Values
| HEX | #10516E |
| RGB | rgb(16, 81, 110) |
| HSL | hsl(199, 75%, 25%) |
| OKLCH | oklch(41.1% 0.078 233.4) |
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 #10516E | 8.66:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #10516E | 2.42:1 | Fails | Lc 14.6 | Not readable |
| #10516E text on white | 8.66:1 | AAA | Lc 89.4 | Fine for body text |
| #10516E text on black | 2.42:1 | Fails | Lc -12.9 | 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
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A4C6DA
oklch(80.8% 0.046 233.9)
-
Step 400
400
#72A9C7
oklch(70.8% 0.073 233)
-
Step 500
500
#4993B9
oklch(63.2% 0.093 233.3)
-
Step 600
600
#257DA5
oklch(55.7% 0.101 232.9)
-
Step 700
700
#16698D
oklch(49.1% 0.094 232.9)
-
Step 800
800 (this color)
#10516E
oklch(41.1% 0.078 233.4)
-
Step 900
900
#1B475D
oklch(37.8% 0.061 233.4)
-
Step 950
950
#112A36
oklch(27.1% 0.038 231.3)
#10516E 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) | #43506F | 0.050 |
| Deuteranopia (no green cones) | #36486E | 0.041 |
| Tritanopia (no blue cones) | #00595B | 0.048 |
| Achromatopsia (no color) | #4B4B4B | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10516E
#10516E
oklch(41.1% 0.078 233.4)
- #6B3E1E
#6B3E1E
oklch(41.2% 0.078 54)
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 #10516E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.033
- Light Navy #155084 ΔE 0.039
- Deep Teal #00555A ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.042
- Petrol #005F6A ΔE 0.047
- Charcoal #264653 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.053
- Dark Slate Gray #2F4F4F ΔE 0.054
Use #10516E 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.