#104666
Closest named color: Dark Grey Blue (#29465B). oklch(37.7% 0.077 240.2), rgb(16, 70, 102).
Aa
White text reads best on this color (10.04:1).
About this color
#104666 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.077 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.027 away. White text reads best on it, at 10.04:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.08:1 |
| White text | 10.04:1 |
Values
| HEX | #104666 |
| RGB | rgb(16, 70, 102) |
| HSL | hsl(202, 73%, 23%) |
| OKLCH | oklch(37.7% 0.077 240.2) |
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 #104666 | 10.04:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #104666 | 2.08:1 | Fails | Lc 10.9 | Not readable |
| #104666 text on white | 10.04:1 | AAA | Lc 93.0 | Preferred for body text |
| #104666 text on black | 2.08:1 | Fails | Lc -9.5 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDED
oklch(88.6% 0.032 239.4)
-
Step 300
300
#9FC6E3
oklch(80.8% 0.058 240.6)
-
Step 400
400
#69A8D5
oklch(70.7% 0.093 240.9)
-
Step 500
500
#3992C9
oklch(63.1% 0.118 239.8)
-
Step 600
600
#007BB6
oklch(55.6% 0.128 240.2)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900 (this color)
#104666
oklch(37.7% 0.077 240.2)
-
Step 950
950
#0C293C
oklch(26.9% 0.049 240.9)
#104666 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) | #374667 | 0.039 |
| Deuteranopia (no green cones) | #2B3F65 | 0.030 |
| Tritanopia (no blue cones) | #004E51 | 0.052 |
| Achromatopsia (no color) | #424242 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104666
#104666
oklch(37.7% 0.077 240.2)
- #5F360F
#5F360F
oklch(37.7% 0.078 59.6)
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 #104666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.027
- Charcoal #264653 ΔE 0.036
- Twilight Blue #0A437A ΔE 0.038
- Marine Blue #01386A ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.049
- Midnight Green #073B4C ΔE 0.054
- Dark Teal #014D4E ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.054
Use #104666 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.