#104A78
Closest named color: Twilight Blue (#0A437A). oklch(39.8% 0.096 247.8), rgb(16, 74, 120).
Aa
White text reads best on this color (9.23:1).
About this color
#104A78 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.096 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.023 away. White text reads best on it, at 9.23:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #104A78 |
| RGB | rgb(16, 74, 120) |
| HSL | hsl(207, 76%, 27%) |
| OKLCH | oklch(39.8% 0.096 247.8) |
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 #104A78 | 9.23:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #104A78 | 2.27:1 | Fails | Lc 13.1 | Not readable |
| #104A78 text on white | 9.23:1 | AAA | Lc 90.9 | Preferred for body text |
| #104A78 text on black | 2.27:1 | Fails | Lc -11.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#DFEBF8
oklch(93.5% 0.022 250.2)
-
Step 200
200
#C5DCF3
oklch(88.5% 0.04 248.3)
-
Step 300
300
#9CC5EE
oklch(80.8% 0.073 248.7)
-
Step 400
400
#62A6E5
oklch(70.6% 0.116 248)
-
Step 500
500
#2E8EDD
oklch(63% 0.147 248)
-
Step 600
600
#0077C5
oklch(55.6% 0.149 247.9)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800
#00528A
oklch(42.8% 0.115 247.8)
-
Step 900
900 (this color)
#104A78
oklch(39.8% 0.096 247.8)
-
Step 950
950
#092842
oklch(26.9% 0.06 247.8)
#104A78 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) | #344C7A | 0.034 |
| Deuteranopia (no green cones) | #244377 | 0.023 |
| Tritanopia (no blue cones) | #00555B | 0.069 |
| Achromatopsia (no color) | #474747 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104A78
#104A78
oklch(39.8% 0.096 247.8)
- #663D00
#663D00
oklch(40% 0.088 68.1)
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 #104A78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.023
- Light Navy #155084 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.031
- Cobalt #1E488F ΔE 0.042
- Dusk Blue #26538D ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.050
- Marine Blue #01386A ΔE 0.060
- Light Navy Blue #2E5A88 ΔE 0.061
Use #104A78 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.