#104F8B
Closest named color: Light Navy (#155084). oklch(42.4% 0.116 252.1), rgb(16, 79, 139).
Aa
White text reads best on this color (8.35:1).
About this color
#104F8B is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.116 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.013 away. White text reads best on it, at 8.35:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #104F8B |
| RGB | rgb(16, 79, 139) |
| HSL | hsl(209, 79%, 30%) |
| OKLCH | oklch(42.4% 0.116 252.1) |
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 #104F8B | 8.35:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #104F8B | 2.51:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #104F8B text on white | 8.35:1 | AAA | Lc 88.4 | Fine for body text |
| #104F8B text on black | 2.51:1 | Fails | Lc -13.8 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A1C4EC
oklch(80.9% 0.068 252)
-
Step 400
400
#6DA4E3
oklch(70.6% 0.11 252.7)
-
Step 500
500
#438CDA
oklch(63% 0.139 252.2)
-
Step 600
600
#1E75C8
oklch(55.7% 0.151 252)
-
Step 700
700
#0E62AD
oklch(49.2% 0.14 251.9)
-
Step 800
800 (this color)
#104F8B
oklch(42.4% 0.116 252.1)
-
Step 900
900
#174370
oklch(37.7% 0.091 252)
-
Step 950
950
#0F2741
oklch(26.8% 0.057 252.3)
#104F8B 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) | #31548D | 0.032 |
| Deuteranopia (no green cones) | #1A498A | 0.017 |
| Tritanopia (no blue cones) | #005D66 | 0.085 |
| Achromatopsia (no color) | #4E4E4E | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104F8B
#104F8B
oklch(42.4% 0.116 252.1)
- #6C4400
#6C4400
oklch(42.3% 0.091 71.6)
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 #104F8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.013
- Dusk Blue #26538D ΔE 0.021
- Cobalt #1E488F ΔE 0.022
- Deep Sea Blue #015482 ΔE 0.023
- Twilight Blue #0A437A ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.055
- Twilight #4E518B ΔE 0.066
Use #104F8B 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.