#104A70
Closest named color: Twilight Blue (#0A437A). oklch(39.3% 0.086 243.1), rgb(16, 74, 112).
Aa
White text reads best on this color (9.39:1).
About this color
#104A70 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.086 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.030 away. White text reads best on it, at 9.39:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.23:1 |
| White text | 9.39:1 |
Values
| HEX | #104A70 |
| RGB | rgb(16, 74, 112) |
| HSL | hsl(204, 75%, 25%) |
| OKLCH | oklch(39.3% 0.086 243.1) |
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 #104A70 | 9.39:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #104A70 | 2.23:1 | Fails | Lc 12.6 | Not readable |
| #104A70 text on white | 9.39:1 | AAA | Lc 91.3 | Preferred for body text |
| #104A70 text on black | 2.23:1 | Fails | Lc -11.0 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C6DDEF
oklch(88.6% 0.035 241.5)
-
Step 300
300
#9DC6E8
oklch(80.9% 0.065 243.7)
-
Step 400
400
#64A8DC
oklch(70.7% 0.103 243)
-
Step 500
500
#3191D2
oklch(63.1% 0.131 243)
-
Step 600
600
#007ABB
oklch(55.7% 0.134 242.9)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005483
oklch(42.8% 0.104 243)
-
Step 900
900 (this color)
#104A70
oklch(39.3% 0.086 243.1)
-
Step 950
950
#0A293F
oklch(27.1% 0.054 243.5)
#104A70 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) | #384B72 | 0.039 |
| Deuteranopia (no green cones) | #2B426F | 0.030 |
| Tritanopia (no blue cones) | #005358 | 0.058 |
| Achromatopsia (no color) | #464646 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104A70
#104A70
oklch(39.3% 0.086 243.1)
- #653A06
#653A06
oklch(39.3% 0.085 63.5)
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 #104A70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.030
- Light Navy #155084 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.038
- Charcoal #264653 ΔE 0.049
- Cobalt #1E488F ΔE 0.055
- Dusk Blue #26538D ΔE 0.057
- Marine Blue #01386A ΔE 0.058
Use #104A70 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.