#104C65
Closest named color: Dark Grey Blue (#29465B). oklch(39.2% 0.072 231.2), rgb(16, 76, 101).
Aa
White text reads best on this color (9.35:1).
About this color
#104C65 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.072 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.026 away. White text reads best on it, at 9.35:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.24:1 |
| White text | 9.35:1 |
Values
| HEX | #104C65 |
| RGB | rgb(16, 76, 101) |
| HSL | hsl(198, 73%, 23%) |
| OKLCH | oklch(39.2% 0.072 231.2) |
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 #104C65 | 9.35:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #104C65 | 2.24:1 | Fails | Lc 12.7 | Not readable |
| #104C65 text on white | 9.35:1 | AAA | Lc 91.3 | Preferred for body text |
| #104C65 text on black | 2.24:1 | Fails | Lc -11.1 | 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 900.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C6DDEA
oklch(88.4% 0.03 232.5)
-
Step 300
300
#9EC8DD
oklch(81% 0.053 229.8)
-
Step 400
400
#65ABCD
oklch(70.8% 0.086 230.8)
-
Step 500
500
#3195C0
oklch(63.2% 0.11 231)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900 (this color)
#104C65
oklch(39.2% 0.072 231.2)
-
Step 950
950
#0A2A39
oklch(27% 0.046 232.6)
#104C65 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) | #3F4B66 | 0.047 |
| Deuteranopia (no green cones) | #344365 | 0.041 |
| Tritanopia (no blue cones) | #005354 | 0.043 |
| Achromatopsia (no color) | #474747 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104C65
#104C65
oklch(39.2% 0.072 231.2)
- #64391F
#64391F
oklch(39.2% 0.072 50.5)
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 #104C65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.026
- Charcoal #264653 ΔE 0.033
- Deep Teal #00555A ΔE 0.040
- Dark Teal #014D4E ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.048
- Deep Sea Blue #015482 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.051
- Light Navy #155084 ΔE 0.053
Use #104C65 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.